# Chem

How do I determine the number of grams for the following Substance? 7.8 mol ZnSo4

1. 👍
2. 👎
3. 👁
1. grams = mols x molar mass

1. 👍
2. 👎
2. 1molZnSO4= 164.46gZnSO4( the molar mass)
7.8 mol ZnSO4* (164.46gZnSO4/1molZnSO4)
= 1259.388g ZnSO4

1. 👍
2. 👎
3. I got 161.47g/mol for ZnSO4

Zn= 65.4094 g/mol
S= 32.065 g/mol
O= 4(15.999 g/mol)

Other than that your method for calculating is correct.

7.8mol ZnSO4 x 161.47g/mol= _________?

1. 👍
2. 👎
4. Using a calculator on the web I obtained 161.45 g/mol ZnSO4. I don't know it that site has the "latest" changes or not. I'm glad Christina caught that.

1. 👍
2. 👎

## Similar Questions

1. ### Chemistry

1)The chemical formula for aspirin is C9H8O4. What is the mass of 0.40 mol of aspirin? How would I find this? 2)The gram molecular mass of oxygen is 16.0 g right? 3)How would I find the mass, in grams, of 3.01 x 10^23 molecules of

2. ### chemistry

1. A solution of sodium oxalate has a pH of 7.82. The [OH-] in mol/L must be which of the following: a) 6.18 b) 1.5 x 10-8 c) 6.6 x 10-7 d) 7.82 e) -7.82 2. When 0.93 mol of O2 and 0.56 mol of NH3 are mixed together and allowed to

3. ### Chemistry

Calculate the enthalpy change for the reaction: Zn (s) + S (s) + 2 O2 (g) → ZnSO4 (s) ΔH = ? kJ by using the following data: Zn (s) + S (s) → ZnS (s) ΔH = –206.0 kJ ZnS (s) + 2 O2 (g) → ZnSO4 (s) ΔH = –776.8 kJ My

4. ### chemistry

3CuCl2 *2H2O + 2Al = 3Cu + 2AlCl3 + 6H2O Determine the number of grams that should have been produced when 1.25g of copper (2) chloride dehydrate reacts with excess aluminum so i'm not really sure how you're supposed to calculate

1. ### algebra

A radioactive substance decays according to the formula A=A0e^kt where A0 is the initial amount of substance (in grams) A is the amount of substance(in grams) after t years k is a constant The half-life of the substance is 10

2. ### chemistry

A certain substance has a solubility of 12 grams in 100 grams of water at 20°C. This means that _____ the substance will begin to dissolve when 12 grams are present in solution when 12 grams of the substance are stirred into a

3. ### chemistry

If 15.0 grams of C3H6, 10.0 grams of oxygen, and 5.00 grams of NH3 are reacted, what mass of acrylonitrile can be produced assuming 100% yield, what mass of the excess reactants remain? 15g C3H6 (1 mol / 42.08 g) = .35 mol C3H6

4. ### science-chem

Four bottles, labeled A through D, each containing about 5 grams of finely powdered white substance are found in a lab. Near the bottles are four labels specifying high purity and indicating that substances are glucose (C6H12O6),

1. ### Chemistry

The question representing the production of tetraphosphorus trisulfide (P4S3), a substance used in some match hears, is 8P4 + 3S8 ---> 8P4S3. Determine if each of the following statements is correct. If the statement is incorrect,

2. ### Exponential Modeling

The half-life of a radioactive substance is one day, meaning that every day half of the substance has decayed. Suppose you have 100 grams of this substance. How many grams of the substance would be left after a week?

3. ### Chemistry

The equation is: CuSO4(s) + Zn(s) -> Cu(s) + ZnSO4(aq) 3.22 g of powdered zinc is added to 200ml of 0.5M copper sulfate solution. What mass of copper is deposited? Hi guys. I am confused about the stoichmetry question. Q: The

4. ### Chemistry

Determine the number of moles of air present in 1.35 L at 100. kPa and 23.0°C (R = 8.317 liter•kPa/mol•K a) 0.0548 mol b) 205 mol c) the number of moles is held constant d) 0.706 mol Please help! I can't get this!!