University:
University of California, Berkeley
Course:
CHEM | Chemistry
Academic year:

2020
Views:

414

Pages:

4
Author:

SpaceCadet101

EXAMPLES WORKSHEET 1. Convert 631 torr to atm. (Answer: 0.830 atm) 2. What volume will 1.80 𝗑 1024 molecules of SO3 occupy at T = 273 K and P = 1.00 atm? (Answer: 67.0 L) 3. How many moles of CO2 are contained in 9.55 L at 45℃ and 752 torr? (Answer: 0.362 mol) 4. In the lab, students generated and collected hydrogen gas according to the following equation: Mg + 2HCl ⎯→ MgCl2 + H2 a. How many L of hydrogen gas at T = 273K and P = 1.00 atm were generated from 42.9 g of magnesium metal reacting with 5.00 g of HCl? (Answer: 39.4 L) b. If 0.825 mL of hydrogen gas at T = 273K and P = 1.00 atm were needed, how many moles of HCl would be required? (Answer: 0.0736 mol) 1. Convert 503 torr to atm. (Answer: 0.662 atm) 2. What volume will 3.20 𝗑 1024 molecules of NH4 occupy at T = 273 K and P = 1.00 atm? (Answer: 119 L) 3. How many moles of CO2 are contained in 4.05 L at 25℃ and 702 torr? (Answer: 0.15 mol) 4. In the lab, students generated and collected H2S gas according to the following equation: 2 HCl(aq) + Na2S(aq) → H2S(gas) + 2 NaCl(aq) a. How many L of H2S gas at T = 201K and P = 5.00 atm were generated from 12.9 g of Na2S metal reacting with 24.3 g of HCl? (Answer: 0.545 L) b. If 0.125 L of H2S at T = 273K and P = 1.23 atm were needed, how many moles of HCl would be required? (Answer: 0.0137 mol)