
Assessment #5: Conversions
Quiz
•
Chemistry
•
9th - 10th Grade
•
Easy
Katie Yankovec
Used 1+ times
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36 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The gram formula mass (molar mass) of NH4Cl is
22.4 g/mol
28.0 g/mol
53.5 g/mol
95.5 g/mol
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which quantity is equivalent to 39 grams of LiF?
1.0 mole
0.50 moles
2.0 moles
1.5 moles
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the molar mass of potassium carbonate, K2CO3 ?
138 g
106 g
99 g
67 g
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the total mass in grams of 0.75 moles of SO2?
16 g
24 g
32 g
48 g
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which substance has the greatest molar mass?
H2O2
NO
CF4
I2
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Where are the numbers for a mole ratio found?
They are part of the chemical formulas for the reactants / products.
They are given in the problem.
They are found on the periodic table for those elements.
They are found as coefficients in the reaction's balanced chemical equation.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane (C2H6) combusts in the above reaction. What is the mole ratio of ethane to oxygen gas?
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