Answer:
197.5 grams
Explanation:
To find the mass (g) of the sample, you need to multiply the given volume (mL) by the denisty. You can use the denisty to convert between mL and g because the denisty is a ratio which represents the mass of the sample per every 1 mL. The ratio should be arranged in a way that allows for the cancellation of units (mL should be in the denominator).
Denisty = 7.9 grams/ 1 mL
25 mL 7.9 grams
----------------- x ---------------------- = 197.5 grams
1 mL
**The final answer is not written with the proper sig figs.
Which is the dependent variable
Concentration or
Time ?
Why is it important to have only one independent variable and to control the
other variables when performing science experiments
Scientists cannot pinpoint the changes or variations in the results to a single source when more than one variable is altered during an experiment. The outcomes can be attributed to the independent variable directly by examining and modifying each variable separately.
You can evaluate the outcomes of your experiment to determine how much one adjustment impacted the outcome by testing just one variable at a time. You won't be able to identify the variable that caused the outcome if you're testing two variables simultaneously. A controlled variable is one that is kept constant with the goal of not affecting how an experiment turns out. Controlling any factors that can affect an experiment's outcomes allows us to be certain that the altered variable is what caused our results.
Learn more about variables here-
https://brainly.com/question/17344045
#SPJ9
A __________ is a flowing, moving stream of water that feeds into a body of water.
hill
plain
plateau
river
Answer:
River
Explanation:
Answer it please! I just need an example
Answer:
Sorry what is you question? If it is about the length of the lego piece, then then length is approximately 3.7 cm.
Explanation:
calculate the mass in grams for .65 moles of N2
The mass in grams for .65 moles of N₂ is 18.2g
What is Mole?
Mole is the mass of a substance that contains 6.023 x 10²³ particles of the substance1 mol of Carbon-12 has mass of 12 grams and contains 6.022 x 10²³ of carbon atomsAtomic mass of nitrogen is 14u . A nitrogen molecule has 2 atoms of nitrogen. Thus its molecular mass is 14 × 2 = 28u.Molar mass is the mass of 1 mole of molecules i.e. mass of 6.022 × 10²³ molecules. Its the same number as molecular mass but the unit is in gramsWe can use the simple formulan = w / M
where
n = no of moles = .65
w = Mass of the given sample = ?
M = Molar mass ( Molar mass is same as molecular mass) = 28g
substituting the values
n = w / M
w = n × M
= .65 × 28
= 18.2g
Thus we can conclude that the mass in grams for .65 moles of N₂ is 18.2g
learn more about moles at https://brainly.com/question/23949935
#SPJ9
What is the mass of the oxygen
used during the reaction?
Iron + Oxygen → Iron Oxide
Iron
19.43 g
Iron Oxide
20.91 g
Give your answer to the correct number of
significant figures.
Mass of Oxygen (g)
The mass of the oxygen used during the reaction is 8.16 g
The reaction is given as ,
4Fe + 3[tex]O_{2}[/tex] → 2[tex]Fe_{2} O_{3}[/tex]
The molar ratio of the above reaction = 4:3
It means four moles of Fe react with 3 moles of oxygen molecule to form Iron Oxide .
mole of iron = given mass / molar mass = 19.43 g / 55.845 g/mole = 0.34 mole
If four moles of Fe react with 3 moles of oxygen molecule to form Iron Oxide .
The number of moles of oxygen = 3 moles × 0.34 mole / 4 moles = 0.22 mole
The number of moles of oxygen = given mass / molar mass = 0.22 mole
The number of moles of oxygen = given mass / 32= 0.22 mole
given mass = 0.22 × 32 = 8.16 g
to learn more about oxygen
https://brainly.com/question/13370320
#SPJ1
Answer: The answer is 1.48
Explanation:
Calculate the number of grams of xenon in 3.541 g
of the compound xenon tetrafluoride.
The mass (in grams) of xenon in 3.541 g of the compound xenon tetrafluoride is 2.243 grams
How to determine the mass of Xe in 3.541 g of XeF₄We'll begin by listing the composition of xenon tetrafluoride, XeF₄
1 mole of XeF₄ contains the following:
1 mole of XeF₄ = 131.3 + (4 × 19) = 131.3 + 76 = 207.3 g1 mole of XeF₄ contains 131.3 g of Xe1 mole of XeF₄ contains 76 g of FThe mass of Xe in 3.541 g of XeF₄ can be obtained as illustrated below:
207.3 g of XeF₄ contains 131.3 g of Xe.
Therefore,
3.541 g of XeF₄ will contain = (3.541 g × 131.3 g) / 207.3 g = 2.243 g of Xe
Thus, 2.243 g of Xe is present in 3.541 g of xenon tetrafluoride, XeF₄
Learn more about mass composition:
https://brainly.com/question/22816432
#SPJ1
What type of reaction is shown below?
CaCO3(s)→ Cao(s) + CO₂(g)
O A. Decomposition
OB. Single-displacement
O C. Double-displacement
OD. Combustion
What is the oxidation state on Ec in the formula below? Ec4O2
The oxidation state on Ec in the given chemical compound Ec₄O₂ is determined as +1.
What is oxidation state?
The oxidation number or oxidation state, is the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.
The given compound;
= Ec₄O₂
The oxidation state of Ec is calculated as follows;
let the oxidation state = x
4x + (2 x -2) = 0
4x - 4 = 0
4x = +4
divide both sides of the equation by "4"
4x/4 = +4/4
x = +1
Thus, the oxidation state on Ec in the given chemical compound Ec₄O₂ is determined as +1.
Learn more about oxidation state here: https://brainly.com/question/14426389
#SPJ1
Suppose you have two samples that are equal in weight, 17.8
g Ti
and 17.8
g Fe2O3
.
Calculate the number of moles of each substance.
Considering the definition of molar mass, the number of moles of Ti and Fe₂O₃ are 0.087 moles and 0.11 moles respectively.
Definition of molar massThe molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.
The molar mass of a compound is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.
Molar mass of TiThe molar mass of Ti is 204.37 g/mole.
Molar mass of Fe₂O₃You know the molar mass of the elements is:
Fe= 55.85 g/moleO= 16 g/moleSo, the molar mass of the compound Fe₂O₃ is calculated as:
Fe₂O₃= 2× 55.85 g/mole + 3× 16 g/mole
Solving:
Fe₂O₃= 159.7 g/mole
Number of moles of each substanceYou can apply the following rules of three:
If by definition of molar mass 204.37 grams of Ti are contained in 1 mole, 17.8 grams of Ti are contained in how many moles of Ti?moles of Ti= (17.8 grams× 1 mole)÷ 204.37 grams
moles of Ti= 0.087 moles
If by definition of molar mass 159.7 grams of Fe₂O₃ are contained in 1 mole, 17.8 grams of Fe₂O₃ are contained in how many moles of Fe₂O₃?
moles of Fe₂O₃= (17.8 grams× 1 mole)÷ 159.7 grams
moles of Fe₂O₃= 0.11 moles
Finally, the number of moles of Ti and Fe₂O₃ are 0.087 moles and 0.11 moles respectively.
Learn more about molar mass:
brainly.com/question/5216907
brainly.com/question/11209783
brainly.com/question/7132033
brainly.com/question/17249726
#SPJ1
Which of the following is an example of how financial goals change due to a value shift?
O buying a new wallet due to wear and tear to your current wallet
O moving from the city to suburbs after having children
O replacing a new phone after losing your old phone
O selling your old computer online to have funds for a new computers
Buying a new wallet due to wear and tear to your current wallet is referred to an example of how financial goals change due to a value shift and is denoted as option A.
What is Value shift?This is defined as the movement between the positive and negative values along a global spectrum of value and is usually dependent on different types of factors.
In this scenario, a torn wallet as a result of wear and tear means it has a negative value and having financial goals to buy a new one is referred to as the most appropriate choice.
Read more about Financial goals here https://brainly.com/question/2801397
#SPJ1
Answer: Moving from the city to suburbs after having children.
Explanation:
1) Once you start saving money, what can be your next step toward financial stability?
Investing it in a wise manner
2) Why is it important to track your income and your expenses?
Because knowing whether you can afford your lifestyle or not is the 1st goal of financial literacy
3) As you grow older, which of these might make you change your personal finance decisions more?
Your family priorities
4) Which showed you finance 1st?
Your needs
5) Which of the following is an example of how financial goals change due to value shift?
Moving from the city to suburbs after having children
6) Which expense is a spending want?
Movie tickets
7) Which options show a financial goal? Select the 2 correct answers
Paying off a credit card & saving for college
8) Which is a common way to spend money from your bank to a bank in a different country?
Wire transfer
9) How can you deposit a paper check?
A & C
10) What is typically included in COGS?
All of the answers are correct
11) What is typically considered part of SG&? Slect the 2 correct answers
Billing cost & commissions
12) What is another term for income statement?
profit and loss (P&L) statement
13) What is another name for an emergency fund?
A rainy day fund
14) What is defined as a budget surplus?
Take-home pay exceeds spending
15) Is using 401(K) money in an emergency the best idea?
No, early withdrawal of 401(K) money will incur a penalty
just took the Earning and Spending Unit Test.
Question 4.1Write the equilibrium constant expression,Kc , for the following reaction:
(If either the numerator or denominator is 1, please enter 1.)
See attachment for question
equilibrium constant expression, Kc ,for the following reaction: Kc for the Reaction is: 1 / [Fe⁺³]² [S⁻²]³
What is Equilibrium Constant of a Reaction ?The equilibrium constant is a type of chemical reaction (usually denoted as the symbol K) use to give the relationship between the products and reactants when a chemical reaction reaches to it's equilibrium. Such as the equilibrium constant of concentration (marked as Kc) of a chemical reaction at equilibrium is defined as the ratio of the concentration of products to that of the concentration of the reactants.It is important for us to note that there are various different types of equilibrium constants which provides relationship between products and the reactants of equilibrium reactions in variety of units.For a chemical reaction, the equilibrium constant is defined as the ratio between the part of reactant and that of product which is generally used in order to determine the chemical behavior.Given Reaction and it's equilibrium constant is:
2Fe⁺³(aq) + 3S⁻²(aq) ⇄ Fe₂S₃ (s)
Now Equilibrium Constant of the reaction is: [Fe₂S₃] / [Fe⁺³]² [S⁻²]³
We know that concentration of solid compound is 1.
Hence, Kc for the Reaction is: 1 / [Fe⁺³]² [S⁻²]³
Thus, from the above conclusion we can say that, Kc for the Reaction is: 1 / [Fe⁺³]² [S⁻²]³ .
Learn more about Equilibrium Constant here: https://brainly.com/question/3159758
#SPJ9
If you take a 13.0- mL portion of the stock solution and dilute it to a total volume of 0.650 L , what will be the concentration of the final solution?
To make a stock solution, weigh out the proper amount of a pure solid or measure out the proper amount of a pure liquid, put it in the right flask, and then dilute it to the desired volume. Depending on the intended concentration unit, many methods can be used to measure the reagent.
If you take a 13.0- mL portion of the stock solution and dilute it to a total volume of 0.650 L , what will be the concentration of the final solution?
"The final solution's concentration would be 0.26M."
By adding extra solvent, you are lowering the concentration of the stock solution in the issue (This process is known as dilution).
Since you increased the volume of the fluid from 13 to 650 milliliters, it was diluted:
50 times = 650 mL / 13 mL
We must now take the concentration of the stock solution in order to determine the concentration of a final solution.
If the standard solution is 13M, then
The final solution's concentration would be 13M / 50 = 0.26M.
To know more about stock solution and final solution, click on the link below:
https://brainly.com/question/20316955
#SPJ9
It takes a turtle 10 seconds to increase his speed from 1 m/s to 5 m/s. What is the acceleration of the turtle
The acceleration of the turtle, given the data from the question is 0.4 m/s²
What is acceleration?This is defined as the rate of change of velocity which time. It is expressed as
a = (v – u) / t
Where
a is the acceleration v is the final velocity u is the initial velocity t is the time How to determine the accelerationThe acceleration of the turtle can be obtained as follow:
Time (t) = 10 sInitial velocity (u) = 1 m/sFinal velocity (v) = 5 m/sAcceleration (a) =?a = (v – u) / t
a = (5 – 1) / 10
a = 4 / 10
a = 0.4 m/s²
Thus, acceleration of the turtle is 0.4 m/s²
Learn more about acceleration:
https://brainly.com/question/491732
#SPJ1
A hamster in a ball begins its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and
ends its journey directly in front of the refrigerator.
If negative values are assigned to positions to the left of its starting position and positive values are assigned to positions
to the right of its starting position, what is the displacement of the hamster?
(1 point)
O 5 feet
O-5 feet
O 0 feet
O 20 feet
The displacement of the hamster ball is equal to -5 feet. Therefore, option (B) is correct.
What is displacement?The displacement of an object can be demonstrated as the change in the position of an object. The displacement can be defined as the minimum length between the initial and the final point of an object.
The displacement can be defined as a vector quantity posses both direction of displacement and magnitude. Therefore, the measurement of the displacement of an object includes direction.
The S.I. unit of the displacement meters and the C.G.S. unit are centimeters the same as the distance.
A hamster in a ball starts its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and ends its journey in front of the refrigerator.
Therefore, the displacement of the hamster ball is equal to -5 feet.
Learn more about displacement, here:
brainly.com/question/14422259
#SPJ1
Insulin is biological molecule that regulates glucose levels in the human body.
Its chemical formula is C256H387N65079S6
Determine the percent composition of one of the elements of insulin. (25 points)
Show your work. (25 points)
Reveal the element chosen in the subject line. (25 points)
Share your % composition with a classmate that determined the % composition of a different element (25 points)
Insulin is a protein composed of chains, an a series with 21 amino acids and a B chain with 30 amino acids which are related together by using sulfur atoms. Insulin is derived from a seventy four-amino-acid prohormone molecule referred to as proinsulin.
The primary reason of insulin is to regulate the body's power deliver via balancing micronutrient stages throughout food intake 30. Insulin is crucial for transporting intracellular glucose to insulin-based mobile tissues together with the liver, muscle, and adipose tissue.
Insulin facilitates preserve blood sugar levels inside regular limits. It does this by means of taking glucose from the bloodstream and transporting it to the body's cells. Cells use glucose for strength and shop excess inside the liver, muscle, and adipose tissue.
Insulin offers cells with glucose for strength via reducing the frame's blood sugar levels and helping cells take in glucose. whilst blood sugar is too low, the pancreas releases glucagon.
Learn more about Insulin here:-https://brainly.com/question/786474
#SPJ9
What kind of force acts within a molecule?
OA. A nonpolar force
OB. A Van der Waals force
OC. An intermolecular force
OD. An intramolecular force
The forces that act within a molecule are intramolecular forces.
What is intramolecular force?The forces that will be generated within a molecule between its atoms will be called the intramolecular force, these are mainly ionic and covalent bonds. These forces are the ones that must be overcome in order to generate a chemical change within the molecule and are the ones that determine what its chemical properties are within a substance.
Ionic bond is in which the complete transfer of electrons occurs and there is a large difference in electronegativity between the atoms, while in the covalent bond the electrons are shared between the two atoms and their electronegativities are similar.
Therefore, we can confirm that the forces that act within a molecule are intramolecular forces.
To learn more about intramolecular forces visit: https://brainly.com/question/12783802
#SPJ1
ionic equation for the reaction between aqueous solution of potassium carbonate and dilute sulphuric acid
Answer:
Ionic equation for the reaction of Potassium Carbonate (aqueous) with dilute Sulphuric Acid gives Potassium Sulphate, Carbon Dioxide and Water.
What is ionic equation?
Ionic equations are chemical equations that represent the electrolytes in aqueous solution as dissociated ions, similar to molecular equations which express compounds as molecules. Usually, this is a salt that has been dissolved in water; in the equation, the ionic species are denoted by (aq) to denote that they are in aqueous solution.
Complete balanced chemical equation is given below:
K₂CO₃ (aq) + H₂SO₄ → K₂SO₄ (aq) + CO₂ + H₂O
To know more about ionic equation and chemical reactions, click on this link
https://brainly.com/question/16243859
#SPJ9
What is the value of secant theta given the diagram below?
Answer:
The value of sec theta is
How to determine the value of sec theta
From the diagram, we start by calculating the length of the hypotenuse (h).
So, we have:
Evaluate
Simplify
The value of the secant in the second quadrant is calculated as:
So, we have:
Evaluate
Hence, the value of sec theta is
Read more about trigonometry at:
brainly.com/question/11967894
THANKS
11
5.0
(6 votes)
Explanation:
hope it helps
Select the statement that accurately summarizes how heat energy spreads throughout a substance. A) As a particle is heated, it absorbs energy. As it bumps into a nearby particle, it transfers all of the heat energy to the second particle. This leaves the first particle with no energy, so its movement slows.B) Heated particles absorb the energy and begin to move more and faster. As they move around, they bump into nearby particles and transfer some of their energy to those particles. This continues until all of the particles in the substance have the same amount of energy. C)Particles are heated and move around. They transfer thermal energy to the other particles as they bump into each other. This continues until all the particles lose all of their energy and motion stops. D)When particles are heated, they become sluggish and slow down. They transfer energy to nearby particles causing them to slow down, too.
The statement " Heated particles absorb the energy and begin to move more and faster. As they move around, they bump into nearby particles and transfer some of their energy to those particles. This continues until all of the particles in the substance have the same amount of energy " summarises the heat transfer throughout the substance.
Heat is the thermal energy that is transferred from a system to its environment or from one thing to another. The object with the higher temperature is transferring energy to the thing with the lower temperature.In order to move thermal energy from one thing or thing to another, or from a system to its surroundings, there are three possible methods:ConductionConvectionRadiation The energy of the particles increases when energy is transmitted to an object. This indicates that the particles have higher kinetic energy, which causes them to move and vibrate more fastly. As the particles move more fastly, they "bump" into nearby particles and transfer some of their energy with them. In this manner, the substance at the other end receives the energy.This is how energy is transferred in a substance.
Learn more about heat transfer here:
https://brainly.com/question/16055406
#SPJ9
. 2.514g Ca, 1.004g O empirical formula
The empirical formula of the given compound is [tex]CaO[/tex].
A chemical compound's empirical formula in chemistry is the simplest whole number ratio of atoms within a molecule.
Given:
Mass of Ca = 2.514g
Mass of O = 1.004g
Molar mass of Ca = 40.078g/mol
Molar mass of O = 15.999g/mol
To find:
Empirical formula = ?
Formula:
Empirical formula = Moles of Ca : Moles of O
Calculations:
No. of moles of Ca = 2.514 / 40.078
n of Ca = 0.06273 moles
No. of moles of O = 1.004 / 15.999
n of O = 0.06275 moles
Divide both by the lowest no. of moles
n of Ca : n of O = 1 : 1
Empirical formula = [tex]CaO[/tex]
Result:
[tex]CaO[/tex] is the empirical formula of the compound.
The complete question is:
In an experiment, a 2.514 g sample of calcium was heated in a pure stream of oxygen, and was found to increase in mass by 1.004 g. Calculate the empirical formula for the given compound.
Learn more about empirical formula here:
https://brainly.com/question/14044066
#SPJ9
Rank each of the following elements by the common number of single bonds the element makes when it bears no formal charge. Each element is from
the second row of the periodic table F,O,N,C,NE
In this ranking we would have; C > N > O > F > Ne.
What is the formal charge?The term formal charge has to do with the charge that an atom appears to have in compound. We can obtain the formal charge from the formula;
Formal charge = [# of valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]
Let us now consider the atoms; F, O, N, C, Ne. We have to rank the atoms by the common number of single bonds the element makes when it bears no formal charge.
In this ranking we would have; C > N > O > F > Ne.
Learn more about formal charges:https://brainly.com/question/11723212
#SPJ1
Name two branches of Chemistry and give an example for each of what that branch has offered to society.
biomedical; kidney function testing, blood testing (healthcare)
analytical; water and soil testing (provides well balanced nutrition for us)
15 POINTS!!!!! NEED ASAP!!!
1. Describe the differences between scale and proportion in relation to a scientific model.
2. In your own words, describe why scientific models are useful, even though much of the time their scale or proportions are not accurate when compared to the real thing.
3. Describe how atoms can be mostly empty space, even though they are the building blocks of everything in the universe. (i.e. how can your desk be made of atoms which are mostly empty space if it is solid?)
4. We learned about three different types of graphs. Describe each type of graph briefly, including what data goes where, then input a picture example of each type of graph.
Line Graph
Bar Graph
Circle Graph
Scale is the 'size of one object and proportion refers to the size of the parts of an object, scientific models help you visualize, atoms do not contain any empty space, they are filled completely with spread-out electrons, circle graph shows percentages and line graphs show data over time'
1. Scale and proportion are both design elements that have to do with size scale is the size of one object in relation to the other objects in a design or artwork and proportion refers to the size of the parts of an object in relationship to other parts of the same object.
2. Scientific models are useful models can help you visualize, or picture in your mind, something that is difficult to see or understand and models can help scientists communicate their ideas and also understand processes and make predictions that's why time their scale or proportions are not accurate when compared to the real thing.
3. Atoms do not contain any empty space and they are filled completely with spread-out electrons, making the shrinking of atoms impossible that's why it is said that the building blocks of everything in the universe.
4.Circle graph shows percentages and line graphs show data over time and bar graphs are for comparing data collected by counting and line graph is graph that uses lines to connect individual data point this three are graph are important
Know more about scale and proportion
https://brainly.com/question/13553546
#SPJ1
Which statement about exoplanets is true?(1 point)
Responses
They only appear once before they disappear in space.
They only appear once before they disappear in space.
They are discovered when they dim a star they pass by.
They are discovered when they dim a star they pass by.
They are objects that are no longer considered planets.
They are objects that are no longer considered planets.
They can be detected by ordinary telescop
They are discovered when they dim a star they pass by ' is true statement about exoplanets among all .
So , B is correct option .
In our solar system, every planet revolves around the Sun. Exoplanets are planets that revolve around other stars . Exoplanets are extremely difficult to directly observe using telescopes. The intense light from the stars they orbit obscures them .
Therefore, astronomers employ various techniques to find and research these far-off planets. By observing the impacts that these planets have on the stars they circle, astronomers look for exoplanets.
to Learn more about exoplanets please click here ,
https://brainly.com/question/21880131
#SPJ1
Fill in the blanks substance X Y Z MASS(g) 10.0 50.0 volume cm 20.0 5.0 density 10.0 4.0
Density of X = 0.5 g/cm³
Volume of Y = 5 cm³
Mass of Z = 20 g
As we know Density is the substance's mass per unit of volume. So according to the given values of X,Y and Z we can calculate density, mass and Volume.
For X:
Volume of X = 10g
Mass of X = 50cm³
Density =Mass ÷ Volume
Density = 10 /50
Density = 0.5 g/cm³
For Y
Mass of Y = 50g
Density of Y = 10g/cm³
Volume = Mass / Density
Volume = 50 / 10
Volume = 5 cm³
For Z:
Volume of Z = 5 cm³
Density of Z =4 g/cm³
Mass of Z = Volume ×Density
Mass of Z = 4×5
Mass of Z = 20g
Complete question is
To learn more about Density follow this link
https://brainly.com/question/6107689
#SPJ9
The density is quantitative method to measure the mass and volume of a substance.
The formulae of density is mass of a substance per unit volume.
1) For X
The mass of X = 10.0gm
The volume of X = 20.0 cm³
Then density of X = mass/ volume
Density of X = 20/10
Density of X = 2 g/ cm³
2) For Y
The mass of Y = 50gm
density of Y = 10 gm/cm³
volume of Y = mass /density
Volume of Y = 50/10
Volume of Y = 5cm³
3) For Z
The volume of Z = 5 cm³
The density of Z = 4 gm/cm³
The mass of Z = density ×volume
The mass of Z = 5× 4
The mass of Z = 20 gm
The density of X = 2 g/ cm³
The Volume of Y = 5cm³
The Mass of Z = 20 gm
Learn more about Density here
https://brainly.com/question/1354972
#SPJ9
How do you find the volume of an irregularly shaped object?
Fill a beaker with water half full. Take note of the original line. Drop the object in. Note the displacement of the water. Subtract the New water level by the old water level. This is volume.
Match the type of mechanical waves to images of particle motion. In each case, the wave moves from left to right.
Image 1 - Surface wave
Image 2 - Longitudinal wave
Image 3 - Transverse wave
What is a wave?The term wave refers to a disturbance along a medium that transfers energy. We know that a transverse wave is one in which the direction of wave motion is perpendicular to that of the disturbance. This occurs in a water wave.
The Longitudinal wave is one in which the direction of the wave motion is parallel that of the disturbance. This is common in a spiral spring. A surface wave could be seen during an earthquake occurrence.
Let us now match the waves;
Image 1 - Surface wave
Image 2 - Longitudinal wave
Image 3 - Transverse wave
Learn more about waves:https://brainly.com/question/3639648
#SPJ1
Calculate the kilojoules needed to heat 221 g of gold from 18 ∘C to 195 ∘C . Express your answer to three significant figures and include the appropriate units.
231 g of gold need to be heated from 18 °C to 195 °C in 5.27 kJ of heat.
The amount of heat, or Q, is what we want to know. To do this, we would apply the formula Q = m•C•T. The beginning and final temperatures can be used to calculate the m, C, and T. We start with 231 g of gold that is 18 °C and add heat to raise the temperature to 195 °C. We can use the following expression to determine how much heat is needed.
Q = c*m*Δt
Q: where the heat
c: The gold's specific heat capacity (0.129 J/g.°C)
m: mass
T: Alteration in temperature
Q=0.213 J/g C x 231 g x (195-18)
=5.27 x 1000 J
=5.27 kJ
231 g of gold need to be heated from 18 °C to 195 °C in 5.27 kJ of heat.
Learn more about heat here-
https://brainly.com/question/1429452
#SPJ9
A sample of metal has a mass of 20.27 g, and a volume of 4.89mL. What is the density of this metal
4145.19 g/L is the density of this metal.
A ratio of an object's mass to volume can be used to determine its density. Mass per unit volume is the measurement unit as a result.
From a physicist's point of view, mass can be described as a measurement of the quantity that is inside a body, omitting elements like the object's volume and any forces that might be exerting pressure on it.
The volume of an object is a measure of how much space it takes up in three dimensions.
ρ = m ÷ V (Density is Mass divided by Volume)
Learn more about density here:
https://brainly.com/question/15164682
#SPJ9