350 mg of sodium would be ingested if you consumed 85 g of the food. This is less than the 2,300 mg (or one teaspoon of table salt) daily limit that is advised.
What is sodium?The body needs sodium, a mineral, to maintain the proper balance of body fluids. It is an explosively reactive alkali group metallic element that is soft, light, and silvery-white. It reacts with water. Table salt and a number of processed foods both contain sodium. Table salt is created when sodium and chlorine are combined. Nonetheless, the body can get harmed by excess sodium.
The amount of sodium in various foods, and even within the same food category, varies greatly.
But, you can ascertain the salt content per serving, which is often represented in milligrams, by looking at the nutrition facts label or ingredient list of the meal (mg). So, using a proportion, you can determine how much salt is in 85 g of the food:
(x mg sodium) / (serving size in g) = (sodium per serving in mg) / (85 g)
The amount of sodium in 85 g of the food, expressed in milligrams, can be found by solving for x. You may divide this by 1000 to get grams.
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How many liters of oxygen at STP are produced
from 1759 of water?
2 Cytot 1302 → 8C02 + 10H120
Answer:
the answer is 11.2 of oxygen at STP
Use this formula for the following questions: 3CaCl2
Underline the coefficient and circle the subscript.
How many calcium atoms?
How many total atoms in the formula?
1. The number of atoms of calcium in the compound is 1.806×10²⁴ atoms
2. The total atoms in the formula is 1.806×10²⁴ atoms
1. How do i determine the number of atoms?The number of atoms in the compound can be obtained as follow:
Formula of compound = 3CaCl₂Number of mole of Ca = 3 molesNumber of atoms =?1 mole of Ca = 6.02×10²³ atoms
Therefore,
3 moles of Ca = (3 moles × 6.02×10²³ atoms) / 1 mole
3 moles of Ca = 1.806×10²⁴ atoms
Thus, the number of atoms of calcium is 1.806×10²⁴ atoms
2. How do i determine the total atoms?The total atoms in the compound can be obtained as follow:
Formula of compound = 3CaCl₂Number of mole of compound = 3 molesTotal atoms =?1 mole of CaCl₂ = 6.02×10²³ atoms
Therefore,
3 moles of CaCl₂ = (3 moles × 6.02×10²³ atoms) / 1 mole
3 moles of CaCl₂ = 1.806×10²⁴ atoms
Thus, the total atoms is 1.806×10²⁴ atoms
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Lysozyme is an enzyme that breaks bacterial cell walls. A
solution containing 0.150 g of this enzyme in 210 mL of
solution has an osmotic pressure of 0.953 torr at 25 °C.
What is the molar mass of lysozyme?
If Lysozyme is an enzyme that breaks bacterial cell walls. The molar mass is: 1.40×104 g/mol..
How to find the molar mass?Osmotic pressure (Π):
Π = M × R × T
where:
M is the molarity of the solution
R is the ideal gas constant
T is the absolute temperature.
So,
M = Π / (R × T)
Π = 0.953 torr × (0.001316 atm / 1 torr) = 0.001254 atm
R = 0.0821 atm L mol-1 K-1
T = 25.0°C + 273 = 298 K
Molarity of lysozome solution = (0.001254 atm) / (0.0821 atm L mol-1 K-1 × 298 K) = 0.00005126 mol/L
Molarity of lysozome solution = 0.00005 mol/L
(0.15 g lysozome) × (1 L soln/ 0.00005126 mol lysozome) × (1 / 0.21 L soln) = 13934.56 g/mol
Molar mass of lysozome = 13934.56 g/mol
Molar mass of lysozome = 1.40×104 g/mol.
Therefore the molar mass of lysozome is 1.40×104 g/mol.
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Calculate the following and povide the answer rounded off to the correct accuracy
(8,12-0,9800)g×(3.4501+0,16)ml
Explanation:
First, let's simplify the expression inside the parentheses:
8.12 - 0.9800 = 7.14 g 3.4501 + 0.16 = 3.6101 ml
Now we can multiply:
7.14 g x 3.6101 ml = 25.775914 g·ml
Rounding off to the correct accuracy (which is the product of the two original values), we get:
25.8 g·ml
I want to make a precipitate from C4 H6 O4Sr and K3 PO4. Is this possible and if so, how do I do this?
calculate the mass of magnesium needed to produce 72mL of hydrogen gas at a pressure of 755mmHg and a temperature of 20 celsius
H2 + Br2 → 2HBr
How many moles of bromine are produced by the synthesis of 6.9 moles of hydrobromic acid, HBr?
The moles of bromine needed to produce 6.9 moles of hydrobromic acid, HBr is 3.45 moles
How do I determine the mole of bromine needed?First, we shall write the balanced equation showing the synthesis of hydrobromic acid, HBr . This is shown below
H₂ + Br₂ -> 2HBr
From the balanced equation above,
2 moles of HBr were obtained from 1 mole of Br₂.
With the above information, we can determine the number of moles of bromine needed to produce 6.90 moles of HBr. This can be obtained as follow:
From the balanced equation above,
2 moles of HBr were obtained from 1 mole of Br₂.
Therefore,
6.90 moles of HBr will be obtain from = (6.9 × 1) / 2 = 3.45 moles of Br₂
Thus, we can conclude that number of mole needed is 3.45 moles
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Write the acidic equilibrium equation for C₃H₇COOH. Be sure to include the proper phases for all species within the reaction.
Propionic acid, C3H7COOH, has an equation for its acidic equilibrium that looks like this: C₃H₇COOH (aq) + H₂O (l) ⇌ C₃H₇COO⁻ (aq) + H₃O⁺ (aq).
Which three equilibrium equations are there?A system must satisfy the three equations of equilibrium, Sum Fx = 0, Sum Fy = 0, and Sum M = 0, in order to be in equilibrium. Start with the equations for the sum of the forces. Dividing the diagonal forces into their component parts would be the most straightforward technique to solve these force systems.
What is an illustration of a reaction in equilibrium?The chemical reaction between the reactants both before and after the reaction is complete is referred to as an equilibrium reaction (i.e., a thermodynamic equilibrium state). The evaporation of water into vapor is an illustration of an equilibrium reaction.
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A room temperature 0.213 M solution of an unknown monoprotic acid has a pH of 1.862. What is the percent ionization of that unknown acid?
The percent ionization of the unknown monoprotic acid is 7.51%.
What is Room Temperature?
Room temperature is a range of temperatures that is comfortable for humans to be in for extended periods of time, typically between 20-25 degrees Celsius (68-77 degrees Fahrenheit). However, the definition of room temperature can vary depending on cultural and regional norms, as well as the specific application. In scientific contexts, room temperature is often defined more precisely, for example as 20-22 degrees Celsius (68-72 degrees Fahrenheit) in laboratory settings.
The percent ionization of an acid is defined as the ratio of the concentration of ionized acid (H+) to the initial concentration of the acid (HA) multiplied by 100%.
% Ionization = [H+]/[HA] x 100%
The concentration of H+ in a solution can be calculated from the pH using the formula:
pH = -log[H+]
Rearranging this equation gives:
[H+] = 10^(-pH)
Substituting the given values of pH = 1.862 and the initial concentration of the acid [HA] = 0.213 M into these equations, we get:
[H+] = 10^(-1.862) = 0.016 M
% Ionization = [H+]/[HA] x 100% = (0.016 M/0.213 M) x 100% = 7.51%
Therefore, the percent ionization of the unknown monoprotic acid is 7.51%.
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Matilda wants to buy some high-quality olive oil. She can buy 2 L bottle for $50, or she can buy 175 mL bottle for $5. In order to compare the prices, she needs to convert the volume of the second bottle to liters.
How many liters of olive oil are in the smaller bottle?
A. 1.75 L
B. 0.175 L
C. 175 L
D. 17.5 L
The volume of olive oil in the smaller bottle would be 0.175 L. Option B.
Dimensional analysisTo convert milliliters (mL) to liters (L), we divide by 1000. Therefore, 175 mL = 175/1000 L = 0.175 L.
The question is asking for the volume of the smaller bottle in liters, and we are given its volume in milliliters. So, we simply need to convert the volume from milliliters to liters.
The other answer choices are not correct because they are either too large or too small to be the volume of a small bottle of olive oil.
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20 mL of CH4 (g) is burned together with 80 mL of O₂ (g), measured under the same
conditions of temperature and pressure. At the end of the reaction:
CH4 (g) + 2 O₂ (g) → CO₂ (g) + 2 H₂O (g)
What is the percentage composition by volume of the gaseous mixture?
40% CH4.20% CO2.40% H₂O
33% CO2 , 66% H2O
40% O2, 20% CO₂, 40% H₂O
25% CH4,25% O₂, 25% CO2. 25% H₂O
25% CH4 50% O2,25% CO2
The correct answer is 25% CH4, 50% O2, 12.5% CO2, and 25% H2O by percentage composition.
What is the chemical equation and we assume what?According to the chemical equation, for every molecule of CH4 burned, we need two molecules of O2. So we can assume that we have 10 mL of CH4 and 40 mL of O2, which will react completely.
Using the ideal gas law, we can find the number of moles of each gas present:
n(CH4) = (0.020 L)(1.00 atm)/(0.0821 L atm/mol K)(298 K) = 0.000964 mol
n(O2) = (0.080 L)(1.00 atm)/(0.0821 L atm/mol K)(298 K) = 0.00386 mol
From the balanced equation, we see that the volume ratio of CH4 to CO2 to H2O is 1:1:2. Therefore:
n(CO2) = n(CH4) = 0.000964 mol
n(H2O) = 2n(CH4) = 0.00193 mol
The total number of moles in the mixture is:
n(total) = n(CH4) + n(O2) + n(CO2) + n(H2O) = 0.000964 + 0.00386 + 0.000964 + 0.00193 = 0.00772 mol
The percentage composition by volume of each gas is equal to the number of moles of the gas divided by the total number of moles, multiplied by 100%:
% CH4 = (0.000964 mol/0.00772 mol) x 100% = 12.5%
% O2 = (0.00386 mol/0.00772 mol) x 100% = 50%
% CO2 = (0.000964 mol/0.00772 mol) x 100% = 12.5%
% H2O = (0.00193 mol/0.00772 mol) x 100% = 25%
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If you combine 440.0 mL of water at 25.00 ∘C and 130.0 mL of water at 95.00 ∘C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.
final= ∘C
The final temperature of the mixture is 41.9. Mass has an impact on how much heat it can receive.
How to calculate final temperature?The mean of the two temperatures is referred to as the ultimate temperature when a mixture contains the same substance with the same mass. The quantity of heat necessary to raise the temperature of one gramme of a substance by one degree is known as a substance's specific heat.
The final heat of your substance can be calculated by adding the temperature difference to the starting point. Keep in mind that each object's mass.
mass has an impact on how much heat it can receive.
q = mCT
440 - 11,000 = 13,300 - 140 final temperature
580 = 24,300
final temperature = 41.9 C
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please help :(
i have no idea what this even means lol
Here are the answers for A and B.
Answer:
(a) 80% are metals.
(b) (1.) Metals are malleable and ductile. (2.) Metals are dense.
Explanation:
(a) If you look at the picture, there are faint lines dividing the circle into ten parts. Metals take up 8 sections and non-metals take up 2. This means that the number of metals on the periodic table takes up 80% and non-metals take up 20%.
(b) There are many physical properties of metals, but two of them are that metals are malleable & ductile (these relate to how metal can be shaped) and that metals are dense (density = mass ÷ volume).
4.16 g of element W reacts with 1.92 g of oxygen to form metal oxide W. The
empirical formula for this metal oxide is W203. What is the relative atomic mass of
W?
[Relative atomic mass : 0 = 16]
A 27
B 52
C 56
D 104
Answer:
52 grams (B)
Explanation:
Given: 4.16 grams of W
1.92 grams of O2
The reaction:
2W + 1.5 O2 ----> W2O3
We are gonna calculate the molar mass of W with ratios
So, to calculate that, we will multiply the moles by molar masses (O2: 1.5 * 32 & W: 2x) and divide the over the given masses and equating both fractions:
[tex]\frac{2x}{4.16} = \frac{1.5*32}{1.92}[/tex]
[tex]x = \frac{1.5*32*4.16}{2*1.92} = 52 grams[/tex]
What is occurring in section D?
heating curve phase changes
A. Particles of a gas are condensing into a solid.
B. Temperature of a gas is decreasing.
C. Temperature of a liquid is rising.
D. Particles of a gas are condensing into a liquid
Answer:
B. Temperature of a gas is decreasing.
C. Temperature of a liquid is rising.
D. Particles of a gas are condensing into a liquid
Explanation:
Simply, the diagram shows physical changes of a substance.
- Region A: we see the substance is very compacted with very closely attached molecules which characterizes solids.
Transition A—C (Region B):
[tex]{ \red{ \dashrightarrow{ \rm{ \: melting}}}} \\ { \blue{ \dashleftarrow{ \rm{ freezing}}}}[/tex]
From A to C, a solid is changing to liquid state by melting down and the reverse process is freezing.
Melting may be cause by increasing pressure and increasing the temperature of the substance. And freezing is the opposite.
- Region C: We see the substance has molecule further apart than in A. This characterizes liquid feature.
Transition C—E (Region D):
[tex]{ \red{ \dashrightarrow{ \rm{ \: evaporation}}}} \: \\ { \blue{ \dashleftarrow{ \rm{ condensation}}}}[/tex]
From C to E, liquid is changing to gaseous state by evaporation down and the reverse process is condensation. Evaporation occurs due to increase in pressure and temperature of the liquid, and condensation is the opposite.
- Region D
The molecules are furthest apart. This characterizes gaseous feature.
Note that also E can change to A and vice versa directly by sublimation.
how much ice can be melted with 560 joules of heat?
The amount of ice that can be melted by a given amount of heat depends on several factors, such as the mass of the ice, the specific heat capacity of ice, and the heat of fusion of ice (the amount of heat required to melt a given mass of ice at its melting point).
Assuming that the ice is at its melting point (0°C or 32°F) and that the heat is used solely to melt the ice (not to raise its temperature), we can use the heat of fusion of ice and the equation:
Q = m * L
where Q is the heat required to melt the ice, m is the mass of the ice, and L is the heat of fusion of ice (334 J/g).
To find the mass of ice that can be melted with 560 J of heat, we can rearrange the equation to solve for m:
m = Q / L
m = 560 J / 334 J/g
m = 1.67 g
Therefore, 560 joules of heat can melt 1.67 grams of ice at its melting point.
Answer:
The amount of ice that can be melted with a certain amount of heat depends on several factors such as the mass of the ice, the initial temperature of the ice, and the specific heat capacity of ice.
However, assuming we are dealing with a certain amount of ice with a specific mass and initial temperature, we can use the following formula:
Q = m × Lf
where Q is the amount of heat required to melt the ice, m is the mass of the ice, and Lf is the heat of fusion of ice, which is equal to 334 joules/gram.
To find the amount of ice that can be melted with 560 joules of heat, we need to rearrange the formula as:
m = Q ÷ Lf
Plugging in the values, we get:
m = 560 J ÷ 334 J/g ≈ 1.67 g
Therefore, 560 joules of heat can melt approximately 1.67 grams of ice.
Describe two careers in the Information and Support Services pathway and the types of technology that each job uses. What is the function of an operating system?
An operating system is a piece of software that, among other things, controls peripheral devices like disc drives and printers as well as files, memory, processes, input, and output.
What are the various information technology career paths?Architecture, information security, programming, systems, networking, analyst, development, project management, or information systems management are all possible career paths.
What three professions fall under the umbrella of health informatics?Careers in health informatics incorporate ideas and techniques from information science, computer science, and healthcare. These specialists might serve as clinical analysts, health information specialists, and managers of computer systems. They can also pursue employment in applied research and higher education.
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How many atoms of oxygen are present in 200.0 g of CaCO3 ?
Explanation:
firstly we find the mole of CaCO3 . Now, in CaCO3 1 mol CaCO3 contains 3 mol O . Hence, 36.138*10^23 atoms of oxygen are present in 200 g of caco3.
Alcohol is less dense than water. If you measured the mass of the same volume of alcohol and water
If you measured the mass of the same volume of alcohol and water, alcohol will weigh less than water.
Density and weightsIf you measured the mass of the same volume of alcohol and water, you would find that alcohol has a lower mass than water.
This is because alcohol is less dense than water, which means that a given volume of alcohol weighs less than the same volume of water.
For example, if you measure 1 liter of water and 1 liter of alcohol, you will find that the mass of the water is greater than the mass of the alcohol.
This is because water has a higher density than alcohol. The density of water is about 1 gram per cubic centimeter, while the density of alcohol is about 0.79 grams per cubic centimeter. Therefore, the mass of the same volume of alcohol is lower than the mass of water.
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Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 2.41 g of methane is mixed with 4.6 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 2 significant digits.
Answer:
2.5 g
Explanation:
The balanced chemical equation for the reaction is:
CH4 + 2O2 → CO2 + 2H2O
From the equation, we can see that for every 1 mole of methane reacted, 2 moles of water are produced. Therefore, we need to first calculate the number of methane and oxygen moles in the reaction mixture.
The molar mass of methane is 16.04 g/mol, so the number of moles of methane present is:
2.41 g / 16.04 g/mol = 0.15 mol
The molar mass of oxygen is 32.00 g/mol, so the number of moles of oxygen present is:
4.6 g / 32.00 g/mol = 0.14 mol
We can see insufficient oxygen to react completely with all of the methane, so oxygen is the limiting reagent. To determine the maximum amount of water that can be produced, we need to use the number of moles of oxygen to calculate the number of moles of water produced and then convert that to a mass using the molar mass of water.
The balanced equation shows that 2 moles of water are produced for every 2 moles of oxygen. Therefore, the number of moles of water produced is:
0.14 mol O2 × (2 mol H2O / 2 mol O2) = 0.14 mol H2O
The molar mass of water is 18.02 g/mol, so the mass of water produced is:
0.14 mol H2O × 18.02 g/mol = 2.53 g
Rounding to 2 significant digits, the maximum mass of water that could be produced is 2.5 g.
16. Based on your knowledge of the scientific method, which statement identifies an observation?
• A. If my neighbor is burning leaves, then I should be able to see smoke because fire produces smoke
• B. I will check to see if smoke is coming from my neighbor's yard
• C. My neighbor is probably burning leaves
• D. I smell smoke when I walk outside.
An observation is that I can smell smoke as soon as I step outside.
Why is observation important?Keeping a close eye on someone or something is the act of observation, such as keeping a close eye on how the planets are moving. When you see or watch something and give it some thought, you can make an observation.
What is workplace observation?The Workplace Observation evaluation gauges an employee's capacity for observing, following, comprehending, and assessing processes, demonstrations, as well as other workplace practices.
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A sample of the compound has 9 grams of cobalt. How many grams of fluorine does the sample have?
The mass (in grams) of fluorine the sample have is 2.91 g
How do I determine the mass of fluorine?First, we shall determine the mole of 9 grams of cobalt. Details below:
Mass of cobalt = 9 grams Molar mass of cobalt = 58.93 g/mol Mole of cobalt =?Mole = mass / molar mass
Mole of cobalt = 9 / 58.93
Mole of cobalt = 0.153 mole
Finally, we shall determine the mass of fluorine the present in the compound. Details below:
Molar mass of fluorine = 19 g/mol Mole of cobalt = 0.153 moleMole of fluorine = Mole of cobalt = 0.153 moleMass of fluorine = ?Mole = mass / molar mass
0.153 = Mass of fluorine / 19
Cross multiply
Mass of fluorine = 0.153 × 19
Mass of fluorine = 2.91 g
Thus, the mass of fluorine is 2.91 g
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what is Cobalt (II) iodide and sodium carbonate net ionic equation
Answer:
Co2+ + CO32- → CoCO3
Explanation:
The molecular equation for the reaction between cobalt (II) iodide and sodium carbonate is:
CoI2 + Na2CO3 → CoCO3 + 2NaI
To write the net ionic equation, we need to eliminate the spectator ions, which are the ions that appear on both the reactant and product side of the equation and do not participate in the reaction. In this case, the spectator ions are Na+ and I-.
The net ionic equation for this reaction is:
Co2+ + CO32- → CoCO3
Therefore, the net ionic equation for the reaction between cobalt (II) iodide and sodium carbonate is:
Co2+ + CO32- → CoCO3
Choose one of the careers in the Information and Support Services career pathway and discuss how this job has evolved over time. How has this change impacted our society?
The Information and Support Services career pathway is an expansive field that has seen many changes over the years. One such career is IT support technicians.
What is society?Society is a group of individuals living together in an organized manner, interacting with one another, and sharing a common culture. It is a complex system through which people interact with each other, form relationships, and build communities.
This job, which originally focused on the installation and maintenance of computer hardware and software, has evolved over time to encompass a much wider range of responsibilities.
Today, IT support technicians not only install and maintain hardware and software, but are also responsible for providing technical support to users, troubleshooting problems, setting up networks, and implementing security measures. They are also responsible for creating and managing databases, configuring and managing software applications, and monitoring system performance. This shift from hardware and software installation to a more comprehensive and technical role has had a significant impact on our society.
The increased complexity of IT systems and the need for sophisticated technical knowledge has meant the job of IT support technicians has become more important than ever. These technicians are now essential to the functioning of businesses, governments, and other organizations, as they are responsible for helping to ensure their systems and networks remain secure and operational. They are also important in helping organizations maximize the efficiency of their systems and ensuring that their users have access to the information they need.
The changing role of IT support technicians has had a positive effect on our society by providing increased access to technology and more widespread adoption of digital services. As more organizations move their operations to the cloud, IT support technicians will be essential in helping them ensure that their systems remain secure and efficient. Furthermore, their knowledge and expertise will be invaluable in helping to protect users from malicious attacks and ensuring that data is kept secure.
Overall, IT support technicians have seen their roles evolve over time, and this evolution has had a positive impact on our society. They are now essential to the functioning of businesses, governments, and other organizations, and their expertise is invaluable in helping ensure the safety and security of our networks, data, and users.
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Choose the formula for the compound tribromide decaoxide.
Choose the formula for the compound trinitrogen octachloride.
Choose the formula for the compound octaselenium heptaoxide.
Choose the formula for the compound disilicon nonachloride.
Choose the formula for the compound nitrogen monofluoride.
Choose the formula for the compound carbon tetrachloride.
The formulas for the given compounds are:
Tribromide decaoxide: Br₃O₁₀Trinitrogen octachloride: N₃Cl₈Octaselenium heptaoxide: Se₈O₇Disilicon nonachloride: Si₂Cl₉Nitrogen monofluoride: NFCarbon tetrachloride: CCl₄What is the formula of a compound?A chemical formula is a representation of the chemical composition of a substance using symbols for the elements and numerical subscripts to indicate the number of atoms of each element present in a molecule or an ionic compound. It is a shorthand way of describing the identity and ratio of the elements in a substance.
The formula for a compound indicates the type and number of atoms in the simplest unit of the substance.
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please answer fast (i will give 22 points)
Answer:
red in acid and green in a base
Explanation:
cabbage juice liquid thing is a pH indicator
The wind blows a lawn chair that weighs 4 kg into a fence with a force of 8 N. How much reaction force does the fence exert on the chair.
A. 2N
B. 0.5 N
C. 0 N
D.8 N
How many grams are there in 6 moles of water??
Answer:108.06 grams
Explanation: the first step is to use unit conversions. Multiply the given number of moles by the molar mass of water which is 15.99 grams of oxygen plus 2.02 grams for two hydrogen that will turn it into grams and that will give you your total number of grams.
What is the mass of 3.5 moles of sodium hydroxide
Answer: The mass of 3,5 moles of NaOH is 139,99 g
Provide the equation for the hydrolysis of propyl propanoate. Provide the equation for the hydrolysis N, N-dimethyl propanamide.
IF POSSIBLE MUST BE DONE ASAP.
Answer:
The hydrolysis reaction of propyl propanoate is as follows:
Propyl propanoate + Water → Propanoic acid + Propanol
The balanced chemical equation for this reaction is:
CH3CH2COOCH2CH2CH3 + H2O → CH3CH2COOH + CH3CH2CH2OH
The hydrolysis reaction of N, N-dimethyl propanamide is as follows:
N, N-dimethyl propanamide + Water → Propanoic acid + Dimethylamine
The balanced chemical equation for this reaction is:
CH3CH2CON(CH3)2 + H2O → CH3CH2COOH + (CH3)2NH