Answer:
vinegar, soft drinks, seltzer water , citrus fruits
Explanation:
balance FeCl3 + MgO ---> Fe2O3 + MgCl2
Answer: The balanced equation is [tex]2FeCl_{3} + 3MgO \rightarrow Fe_{2}O_{3} + 3MgCl_{2}[/tex]
Explanation:
The given reaction equation is as follows.
[tex]FeCl_{3} + MgO \rightarrow Fe_{2}O_{3} + MgCl_{2}[/tex]
Here, number of atoms present on reactant side are as follows.
Fe = 1Cl = 3Mg = 1O = 1Number of atoms on product side are as follows.
Fe = 2Cl = 2Mg = 1O = 3To balance this equation, multiply [tex]FeCl_{3}[/tex] by 2 and MgO by 3 on reactant side. Also, multiply [tex]MgCl_{2}[/tex] by 3 on product side. Therefore, the equation can be rewritten as follows.
[tex]2FeCl_{3} + 3MgO \rightarrow Fe_{2}O_{3} + 3MgCl_{2}[/tex]
Hence, number of atoms on reactant side are as follows.
Fe = 2Cl = 6Mg = 3O = 3Number of atoms on product side are as follows.
Fe = 2Cl = 6Mg = 3O = 3Since, this equation contains same number of atoms on both reactant and product side. Therefore, this equation is now balanced equation.
Thus, we can conclude that the balanced equation is [tex]2FeCl_{3} + 3MgO \rightarrow Fe_{2}O_{3} + 3MgCl_{2}[/tex].
Consider the Hertzsprung Russell diagram seen here. We can use this diagram to classify stars and determine their characteristics.
The color of a star is determined by its temperature: the hottest stars are blue and the coolest are red. The Sun has a surface
temperature of 5,500°C and it appears yellow. The diagram also indicates that temperature coincides with luminosity: the hotter the
star, the higher the luminosity. You can also tell the size of each star from the graph as the larger the radius, the higher the
temperature and luminosity. Regardless of a star's position in the diagram, the energy that results in high temperatures and the stars
luminosity is generated by what process?
W
A)
nuclear fusion
B)
nuclear fission
gravitational forces of swirling gases
D)
friction generated by gravitational force
Answer:
Explanation:
A- nuclear fusion
PLEASE HELP ASAP!!
57. Sodium sulfate is used in the manufacture of detergents.
a. Identify each of the component elements of sodium sulfate, and write the compound's chemical formula.
b. Identify the compound as ionic or covalent.
c. Calculate the percent by mass of each element in sodium sulfate.
Answer:
See Explanation
Explanation:
The formula of sodium sulphate is Na2SO4. The component atoms in the compound are; sodium, sulphur and oxygen.
The compound is ionic. it is composed of sodium ions and sulphate ions.
The molar mass of sodium sulphate = 142 g/mol
percentage by mass of sodium = 2* 23/142 * 100 = 32.39 %
percentage by mass of sulphur = 32/142 * 100 = 22.5%
percentage by mass of oxygen = 4 * 16/142 * 100 = 45.1 %
What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?
Answer:
The molecules gain kinetic energy, more farther apart, and become a gas.
Explanation:
Answer:
Explanation:
Continued heating of liquid water causes the molecules to vibrate even faster, steadily raising the temperature, Freezing When liquid water freezes, it releases thermal energy and turns into the solid-state, ice.
PLEASE HELP THIS IS SCIENCE
I'm pretty sure the answer is A.
Answer:
where is the answer??
Please do not just take the points without awnsering the question.
Arriving back from school, you decide to microwave a Hot Pocket for a snack. You have a
1500W microwave that took 3 minutes to cook the Hot Pocket.
Answer:
Kristy thank you doing today hope you doing recently
Radio waves, ultraviolet rays, X-rays, and gamma rays are all examples of electromagnetic radiation, as are microwaves.
What is Microwave?There are several uses for microwaves, including for communications, radar, and—possibly for the most part—cooking. Waves or particles of electromagnetic radiation with various wavelengths and frequencies are communicated.
The electromagnetic spectrum (EM spectrum) is the name given to this wide spread of frequencies. In general, the spectrum is divided into seven areas in ascending sequence of increasing energy and frequency and decreasing wavelength.
Radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays, and gamma-rays are some of the common names for these types of energy. In the electromagnetic (EM) spectrum, microwaves are found between radio and infrared light.
Therefore, Radio waves, ultraviolet rays, X-rays, and gamma rays are all examples of electromagnetic radiation, as are microwaves.
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What can be concluded about the purpose many robots will have in the future
Please helppppp!!! I have 10 minutes left!!!
Answer:
I think it's the ash can mix with rivers to form mudflows
What is the relationship between a planet's period of rotation and diameter?
There is, however, a relationship between a planet's distance from the Sun and its period of revolution. Kepler's third law of planetary motion says that the square of the planet's orbital period is proportional to the cube of its semimajor axis.
According to Kepler's third law of planetary motion, a planet's semimajor axis and orbital period are inversely proportional.
What is Kepler's third law?Kepler's third law is defined as the cubes of the semi-major axes of the planets' orbits are directly proportional to the squares of the planets' orbital periods. According to Kepler's Third Law, as an orbiting planet's radius increases, so does the time of its orbit around the Sun. A planet's orbits around the sun are accurately described by Kepler's third law in terms of their period and distance.
The cube (third power) of an orbital radius is directly related to the square (second power) of a planet's period (P2 = R3). The period of revolution shortens as the planet's distance from the sun rises.
Thus, according to Kepler's third law of planetary motion, a planet's semimajor axis and orbital period are inversely proportional.
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4.1.3 Quiz: Heat
Question 15 of 15
The sum of the kinetic energies and potential energies of all of the molecules
in a substance is called the energy of the substance.
Answer here,
SUBMIT
Answer:
Internal
Explanation:
Internal energy is the sum of kinetic and potential energies of all the molecules in a system.
NEED ASWER FAST !!!
The equation below represents the main ingredients a vendor uses to make the double cheeseburgers he sells.
1 bun + 2 hamburger patties + 2 slices of cheese à 1 double cheeseburger
The double cheeseburgers sell for $2 each. The vendor has 1326 buns, 2624 hamburger patties and 2004 slices of cheese. How much money will the vendor make selling the double cheeseburgers
Answer:______ dollars
Answer:
1326
2624÷2=1312
2004÷2=1002
1002*2=$2004
Explanation:
2004 dollars
Answer:
.-.
Explanation:
What is the relative humidity if the dry-bulb temperature is 8˚C and the difference between the wet and dry-bulb temperatures is 6˚C ?
Answer:
39%
Explanation:
The Dry Bulb Temperature (also known as air temperature) is the ambient air temperature.
The Wet Bulb temperature is the temperature of adiabatic saturation.
The relative humidity is the amount of water vapor in the air. The relative humidity can be gotten from the dry bulb and wet bulb temperature. The difference between the wet bulb and dry bulb temperature as well as the dry bulb temperature is used to determine the relative humidity with the help of a Psychrometric Chart
Given that the dry-bulb temperature is 8˚C and the difference between the wet and dry-bulb temperatures is 6˚C. From the chart:
Relative humidity = 39%
Answer:
39% I believe is correct.
6. What happens when :
a)
manganese dioxide is heated with conc.
hydrochloric
acid.
Answer:
Chlorine gas is produced
Explanation:
One of the methods of laboratory preparation of chlorine gas is to heat manganese dioxide with concentrated hydrochloric acid. The acid is oxidized by the manganese dioxide to liberate chlorine gas as follows;
MnO2(s) + 4HCl(aq) -------> MnCl2(aq) + 2H2O(l) + Cl2(g)
Hence, When manganese dioxide is heated with concentrated hydrochloric
acid, chlorine gas is liberated.
Determine the mass in grams of Avogadro's number of C12H22O11
Answer:
2.059524x10^26 if im not wrong
Explanation:
avogadro's number is 6.022x10^23
2. Given the following balanced chemical equation: 3ZnO + 2Li3N
-->
Zn3N2 + 3Li20
If 3.14 g of ZnO reacts with 3.14 g of Li3N,
a. Identify the limiting reactant.
b. Identify the reactant in excess.
c. How many grams of Zn3N2 are formed?
d. How many grams of the excess reactant are needed for the reaction?
e. How many grams of the excess reactant are left at the end of the reaction?
Answer: For question, C. 224.1534
Explanation:
1 mole is equal to 1 moles Zn3N2, or 224.1534 grams.
PLS HELP ON A TIMER!
if the pressure exerted by a sample of carbon dioxide at 25° C in a volume of 0.44L is 3.81 atm, what is the mass of the carbon dioxide?
A. .0685
B. 1.65
C. 3.02
D. 14.4
Answer:
3.02
Explanation:
Help me Look at the pictures!!!! Past due!
Make an explanation of how my hypothesis is not supported.
Answer:
Explanation:
the temperture of the warmer water will make it have more space and have less density in the water.
Only producers are able to capture energy from the sun and the matter from the environment to make food.How does energy that come from the sun get to every other organism?How does matter from the environment enter every other organism?
Answer:
Explanation:
Plants get energy from sunlight to produce carbohydrates. When a consumer such as herbivore consume plants, he gets energy and when a canivore or omnivore consume the primary consumer, energy is also transfered to them and this is called food chain.
Matter from the environment which include fallen leaves or trees will decompose after a while in the ground when decomposers begin to act on it and it will eventually give them energy. Decomposer help break down organic matter such as leaves,dead animals and get little amount of of energy in the energy flow pyramid
Calculate the average reading for all three trials for both the wet bulb and dry bulb thermometers. Convert the average
temperatures for both thermometers to Celsius using this formula:
(°F - 32) = °C.
Answer: °32= 0 °C.
Explanation:
Answer:
Explanation:
Please add the temperature readings from all three trials for both thermometers. Will do the calculation with readings.
The author wanted to revise this story to allow readers to understand more fully how Coach Wilkins felt about the banquet and his career. What change would be MOST effective? Include the point of view of the coach by adding his thoughts and dialogue. A) Remove all the details about Josh, the cafeteria workers, and Principal Edwards B) Include more information on the activities with which Coach Wilkins was involved. Change the details to have Coach Wilkins deciding to teach social studies and coach footbalL D) y Comprehension
Answer:D
Explanation:i did the usa test prep
Answer:answer is D
Explanation:
how many grams of copper do you have if you have 2.00 moles of copper
Answer:
We assume you are converting between moles Copper and gram. You can view more details on each measurement unit: molecular weight of Copper or grams.
A gas is confined in a cylinder fitted with a movable piston. At 27ºC, the gas occupies a volume of 2.0 L under a pressure of 3.0 atm. The gas is heated to 47ºC and compressed to 5.0 atm. What volume does the gas occupy in its final state?
A: 0.78 L
B:1.3 L
C:2.1 L
D:0.48 L
The volume of the gas is 1.27 L at a temperature is 47°C and the pressure is 5.0 atm. Therefore, option (B) is correct.
What is the ideal gas equation?The ideal gas equation is described as the equation of the state of a perfect gas. The ideal gas equation is the product of the pressure and volume of one-mole gas is equal to the multiplication of the absolute temperature and gas constant.
The mathematical equation for a perfect gas is as follows:
PV = nRT
where n is the moles of an ideal gas, P is the pressure of the gas, V is the volume, and R is the universal gas constant.
Given, the initial volume of the gas, V₁ = 2.0 L
The initial temperature of the gas, T₁ = 27° C = 300.15 K
The initial pressure of the gas, P₁ = 3.0 atm
The final temperature of the gas, T₂ = 47° C = 320.15 K
The initial pressure of the gas, P₂ = 5.0 atm
We know that for an ideal gas:
[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
[tex]V_2=\frac{P_1V_1T_2}{T_1P_2}[/tex]
[tex]V_2= \frac{3.0\times2.0\times320.15}{5.0\times 300.15}[/tex]
[tex]V_2= 1.27 L[/tex]
Therefore, the volume of the gas in its final state is equal to 1.27 L when the gas is heated to 47ºC and compressed to 5.0 atm.
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WILL MARK BRAINLIEST
What is the oxidation state of Carbon in CaC2O4?
Answer:
The oxidation state of carbon in CaC204 is 3
Answer:The oxidation number of the carbons + the oxidation numbers of the oxygens must equal -2. Carbons + (-8) = -2 so the oxidation number of the carbons must be +6. Since there are 2 carbon atoms each must contribute +3 each. What is the oxidation number of S in Na2S2O3?
Explanation:
The oxidation state of Oxygen is -2 and that of Calcium is +2. There are four oxygen atoms which amounts to -8 charge. This leaves a charge of +6 on Carbon
Es un cambio natural o provocado, donde se produce energía para agua y dióxido de carbono: a)Precipitación. b)Fermentación c) Efervecencia. d) Combustión.
Answer:
d) Combustión.
Explanation:
¡Hola!
En este caso, dado que estamos enfocados en el concepto de cambio químico, el cual se caracteriza por exhibir un cambio en la composición e identidad de las sustancias iniciales (reactivos) a otras finales (productos).
Ahora bien, como se nos dice que los productos de este cambio químico son energía, agua y dióxido de carbono, inferimos que el nombre de este proceso es d) Combustión, por ejemplo la combustion del gas natural para calentar nuestras comidas en la cocina.
¡Saludos!
A gas has a volume of 62.65 L at stp. At what temperture in C would the volume of the gas be 78.31 at a pressure of 612 mm hg
Answer:
1.79°C
Explanation:
Applying,
PV/T = P'V'/T'................. Equation 1
Where P = Initial presssure, V = Initial volume, T = Initial temperature, P' = Final pressure, V' = Final volume, T' = Final Temperature.
make T' the subject of the equation
T' = P'V'T/PV................ Equation 2
From the question,
Given: P = 760 mmHg (Standard pressure), T = 273 K (Standard temperature), V = 62.65 L, P' = 612 mmHg, V' = 78.31
Substitute these values into equation 2
T' = (612×78.31×273)/(760×62.65)
T' = 274.79 K
T' = (274.79-273) °C
T' = 1.79°C
What is the name of NaC2H3O2?
The chemical name for NaC₂H₃O₂ is sodium acetate.
Sodium acetate is a compound that consists of sodium ions (Na+) and acetate ions. It is also known by its chemical formula CH₃COONa. The compound is commonly found in both solid and aqueous forms.
Sodium acetate is produced by the neutralization reaction between acetic acid and sodium hydroxide. It can also be obtained by reacting sodium carbonate with acetic acid. The resulting product is a white crystalline solid that is highly soluble in water.
One of the notable properties of sodium acetate is its ability to act as a buffer solution, meaning it can resist changes in pH. It is often used in various applications.
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The graph shows the speed of a car
traveling east over a 12 second
period. Based on the information in
the graph, it can be concluded that
in the first 6 seconds, the car is -
A changing its direction.
B experiencing less and less
friction.
moving at a constant speed
D climbing a steep incline.
Answer:
Letter B.
Explanation:
Changing its direction and climbing a steep incline can't be proven only by the graph info. You can see that it's speed isn't constant in the graph.
We have letter B left.
Please help me with number 43
Answer:
The reason why atomic mass is usually not a whole number is because it is a weighted average of the mass numbers of isotopes
Explanation:
which process requires more energy to be released, condensation or freezing? explain
Answer:
Condensation
Explanation:
the process of evaporation and condensation takes 7.5 times as much energy as melting or freezing.
According to the forces of attraction, condensation process requires more energy to be released,as in the process state is changing from less orderly state to a more orderly state.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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1. Observa y completa los neutrones se encuentran ----------------- A. Girando alrededor d las orbitas B. Fuera del nucleo C. En las orbitas del nucleo D. Dentro del nucleo
Answer:
Los neutrones se encuentran dentro del núcleo.
Explanation:
Un átomo es la parte más pequeña de materia que puede combinarse químicamente con otro y mantiene todas las propiedades de un elemento.
Los átomos se combinan para formar moléculas que luego interactúan para formar sólidos, líquidos y gases.
Su estructura está compuesta por diferentes combinaciones de tres sub-partículas: los neutrones, los protones y los electrones. A su vez posee dos regiones diferentes: el núcleo, donde están los protones y los neutrones, y la nube u orbitales electrónicos, donde se encuentran los electrones.
Entonces, los neutrones se encuentran dentro del núcleo.