Stoichiometry KG

Stoichiometry KG

5th - 6th Grade

12 Qs

quiz-placeholder

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Stoichiometry KG

Stoichiometry KG

Assessment

Quiz

Chemistry

5th - 6th Grade

Practice Problem

Medium

NGSS
HS-PS1-7

Standards-aligned

Created by

Kevin Gallagher

Used 1+ times

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12 questions

Show all answers

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?

2
4
6
8

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?

3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol 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?

96 g
0.67 g
2.67 g
48 g

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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