Reacting masses and moles
Authored by Kathleen Quinn
Chemistry
9th - 11th Grade
NGSS covered
Used 3+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?
10/6
3/4
4/3
2/3
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
1/2
2/1
3/4
4/3
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the GFM of table salt (NaCl)?
116.89 g/mol
35.45 g/mol
22.99 g/mol
58.44 g/mol
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the GFM of NaOH?
40.00 g/mol
38.99 g/mol
23.99 g/mol
57.00 g/mol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
N2 + 3H2 → 2NH3
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2H2 + O2 → 2H2O
How many moles of water can be produced if 8 moles H2 are used?
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2NaClO3 (s) → 2NaCl (s) + 3O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
NaClO3 = GFM 106.44 g ; O2 = GFM 32.00 g
256 g of O2
576 g of O2
288 g of O2
384 g of O2
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