
Practice Quiz #2 Stoichiometry (Limiting Reactant & % Yield)
Authored by Dominie Dew
Chemistry
10th - 12th Grade
NGSS covered
Used 2+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of Fe can be made from 6.0 moles H2? (This is a one step conversion using mole ratio)
**SHOW YOUR DIMENSIONAL ANALYSIS ON PAPER**
4.0 moles Fe
6.0 moles Fe
9.0 moles Fe
2.0 moles Fe
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Cl2 + 2KBr → Br2 + 2KCl
How many grams of KCl can be produced from 356 g of KBr? (This is a three step conversion from grams to moles, mole ratio, and then moles to grams)
**SHOW YOUR DIMENSIONAL ANALYSIS ON PAPER**
749 g
223 g
479 g
814 g
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Use the following reaction: N2 + 3 H2 → 2 NH3
What is the correct number of moles of H2 that is reacted to produce 13.2 moles of ammonia (NH3) in the presence of excess of nitrogen?
**SHOW YOUR DIMENSIONAL ANALYSIS ON PAPER**
19.8 mol
8.80 mo
13.2 mol
6.6 mol
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
**SHOW YOUR DIMENSIONAL ANALYSIS ON PAPER**
14 mol
2.8 mol
6.1 mol
6.9 mol
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
When does a chemical reaction stop?
Tags
NGSS.HS-PS1-6
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The limiting reactant
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the limiting reactant if 10 moles of NH3 react with 30.0 moles of NO?
4NH3+6NO --> 5N2 + 6H2O
**SHOW YOUR DIMENSIONAL ANALYSIS ON PAPER**
NH3
NO
N2
water
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