Stoichiometry Volume

Mg₃N_2(s) + 3H₂O_(l) ––> 3 MgO + 2NH_3(g)If 10.3 g of magnesium nitride is used, what volume of ammonia gas will be produced? M_r (Mg₃N₂) = 101gmol^-1

• 27.1 dm³ H₂

• 4.90 dm³ H₂

• 0.204 dm³ H₂

• 10.3 dm³ H₂

• 2.04 dm³ H₂

Tags

NGSS.HS-PS1-7

Calculate the mass of CO₂ formed from 1.2dm³ of CO. M_r (CO₂) = 44gmol^-1

• 2.2g CO₂

• 1.2g CO₂

• 1.05g CO₂

• 1.50g CO₂

• 2.4g CO₂

Tags

NGSS.HS-PS1-7

What volume of hydrogen will be produced from 67.3 g of magnesium? M_r(Mg) = 24.3 gmol^-1

• 66.5 dm³

• 65.6 dm³

• 132.9 dm³

• 73.5 dm³

• 113.5 dm³

What's the volume of 51g of NH₃? M_r(NH₃) = 17 gmol^-1

• 72 dm³

• 3 dm³

• 51 dm³

• 153 dm³

• 91 dm³

CO has a volume of 120cm³. What's the mass of this gas? M_r(CO) = 28 gmol^-1

• 0.14g

• 140g

• 0.12g

• 120g

• 150g

What volume of oxygen gas is produced from 8.50 moles of water?

• 22.4 L

• 95.2 L

• 190. L

• 44.8 L

Given: 3F_{2 (g)} + 2FeCl_{3 (aq)} - - > 2FeF_{3 (s)} + 3Cl_{2 (g)}

195 L of fluorine gas will produce how many moles of iron III chloride?

• 0.115 mol

• 8.71 mol

• 0.172 mol

• 5.80 mol

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation

• Panic

• Write an Unbalanced Equation

• Ask for help

What is the mole ratio in the following reaction:
2CO  +  O₂  → 2CO₂

• 2:1:2

• 1:1:1

• 1:2:1

• Have no clue what a mole ratios is!!

Tags

NGSS.HS-PS1-7

1 mole of any gas at STP has a volume of ______________________. 

• 22.4 liters

• 44.2 liters

• 6.02 x 10²³ liters

• 2.4 liters