
Stoichiometry KG
Authored by Kevin Gallagher
Chemistry
5th - 6th Grade
NGSS covered
Used 1+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?
9.0
14
27
56
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A sample of 3.0 grams of an ideal gas at 127°C and 1.0 atm has a volume of 1.5 L. What is the molar mass of this gas
7.3 g/mol
0.015 g/mol
0.00092 g/mol
66 g/mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
At approximately what temperature will 40. g of argon gas at 2.0 atm occupy a volume of 22.4 L?
1200 K
1100 K
550 K
280 K
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2H2 + O2 → 2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
SiO2 + 3C → SiC + 2CO
I need to add 8 moles of Carbon to the reaction. How many grams of Carbon should I weigh?
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
PCl5 + ___ H2O → ___ HCl + H3PO4
4, 5
1, 6
3, 8
2,2
Tags
NGSS.HS-PS1-7
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