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<center>Two Step Mole Problems Handout 3</center> 
 
Answer the following problems show all work. For the purpose of this handout, all gases are assumed to be at <nowiki>STP</nowiki> (standard temp & pressure). 
 
Answers should be completed on separate sheets (no more than 5 problem per sheet.) In other words, need to complete work on 2 or more sheets of paper ( a sheet of paper is front and back.)

1. How many liters @STP of F2 if I have 56.1g of this compound.

2. How many atoms of Neon if I have 121L of this element @STP?

3. What is mass (in kg) do I have to weigh out to get 9.21E24 molecules of Heptasulfur tribromide?

4. How many formula units of Tin (IV) sulfate do I have if I have 79.2g of this compound?

5. What is volume (in L) of 5.05E24 atoms of Helium gas (@STP).

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6. How many kg of Carbon monoxide gas do I have if there are 16.4 L @STP of this gas

7. What is the mass of 3.06E20 formula units of Aluminum carbonate?

8. What is the volume of 2.8E24 molecules of hydrogen gas?

9. How many grams are there in 6.45E25 molecules of S3Cl4?

10. How many f.u. in 2.00kg of potassium sulfate? 
 
 
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Answers: 
1) 33.1L F2 @STP 
2) 3.25E24 atom Ne 
3) 7.089 kg S7Br3 
4) 1.41E23 f.u. Sn1(SO4)2 
5) 188 L He @STP 
6) 0.0205 kg C1O1 
7) 1.19E-1g Al2(CO3)3 
8) 104L H2 @STP 
9) 2.55E4g S3Cl4 
10) 6.92E23 f.u. K2(SO4)1

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