6 chemistry assignments due in 3 days

Stoichiometry 3: Mole - Volume, Volume-Volume, Mass-Volume Problems

Show your handwritten work on paper for each of the problems below. If typed, I will return this to you to hand write and resubmit for a reduced amount of points. Each problem must be worked according to the methods presented in the lesson, including writing ALL units of measurement, which cross out above and below the line. Submit your work which includes your student I.D. Do not cover up any of your work in your submission. See the Periodic Table of the Elements ; Scientific Calculator; and Mole Island Diagram.

1) Use the following equation to answer the questions that follow. 1 mol any gas @STP = 22.4 L

N2 (g) + 3 H2 (g) → 2 NH3 (g)

A. How many liters (L) of N2 are needed to completely react with 4.75 moles of H2?

B. How many liters of NH3 form when 3.25 liters of N2 react?

C. How many liters of H2 are required to produce 24.50 liters of NH3?

2) If 50.0 L of oxygen are consumed in the reaction shown below, how many liters of CO2 are produced? C3H8 + 5 O2 → 3 CO2 + 4 H2O

3) An automobile airbag inflates when N2 gas results from the explosive decomposition of sodium azide: (NaN3), according to the equation below. Calculate the mass of NaN3 required to produce 50.0 L of N2 gas at STP. 2 NaN3 (s) → 2 Na (s) + 3 N2 (g)