CBA 2
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Medium
Standards-aligned
Daniel Jasso
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many molecules are in 0.500 mol of N₂O₅?
1.20 x 10²³ molecules
1.20 x 10²⁴ molecules
3.01 x 10²³ molecules
3.01 x 10²⁴ molecules
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3Mg + N2 → Mg3N2
Using the equation above, a 9.27g sample of N₂ reacts completely. How much Mg was used? Molar mass of N2 = 28 g/mol. Molar Mass of Mg is 24.3 g/mol
0.993 g
2.65 g
3.09 g
24.1 g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
BaBr2 + K2SO4 → 2KBr + BaSO4
How many moles of KBr will be produced if 4 moles of BaBr₂ are used?
8 moles
6 moles
4 moles
2 moles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2H2 + O2 → 2H2O
How many grams of water are produced when 2.50 mol oxygen reacts with hydrogen?
18 g
45 g
90 g
160 g
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the pressure in atm of 2.50 moles of a gas at 200°C that occupies 8.1 L?
5.07 atm
11.99 atm
332.5 atm
786.4 atm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which flask would the pressure be the lowest?
Flask 1
Flask 2
Flask 3
Flask 4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The initial pressure of the gas in the cylinder was 3,060 mmHg. The gas expands as the piston moves up.
What is the final pressure of the gas after the expansion?
544 mm Hg
784 mm Hg
2,898 mm Hg
3,230 mm Hg
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