Chemistry Final Exam Review Units 8-10

Chemistry Final Exam Review Units 8-10

10th Grade

15 Qs

quiz-placeholder

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Chemistry Final Exam Review Units 8-10

Chemistry Final Exam Review Units 8-10

Assessment

Quiz

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10th Grade

Easy

Created by

Amanda Lathem

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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ammonia (NH₃) is used to make fertilizer. If you have 2.5 mol of ammonia, how many grams of H₂ did you start with? N₂ + 3 H₂ → 2 NH₃

1.96 g H₂
75 g H₂

7.5 g H₂

6.0 g H₂

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculate the number of moles of KCl if you have 2.0 g of it.

0.0265 moles KCl

3.37 moles KCl
0.297 moles KCl
3.36 moles KCl

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams of sodium chloride can be produced from 5 g of sodium in the presence of excess chlorine? 2 Na + Cl₂ → 2 NaCl

140 g

13 g

70. g
44 g

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you have 3 moles of Na and 1 moles of Cl₂, which is the limiting reagent? 2 Na + Cl₂ → 2 NaCl

Na
Cl₂
NaCl
there is no limiting reagent

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a reaction is supposed to produce 17 g of product, but you only get 12 g, what was the percent yield of the reaction?

10%

71%

80%
170%

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the pressure exerted by a gas at 25℃ in a volume of 4.5 L is 3.0 atm, how many moles of gas are present?
0.55 moles
6.6 moles
0.045 moles
37.5 moles

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Convert 140 mmHg to atm?

4.5 atm
2.2 atm

0.18 atm

0.22 atm

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