Exp. 2 : Open book quiz-
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Easy
Celia Sosa
Used 5+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A reaction requires 2.5 moles of zinc oxide. How many grams would this equate to?
81.4 g
163.5 g
203.5 g
32.6 g
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A teacher has given a lab student a white chemical sample and asks her to confirm that it contains 7.03 × 1023 formula units of sodium hydroxide (NaOH). Using the balance in the laboratory, what is the molar mass of NaOH.
0.03 g
7.03 g
40.0 g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar volume of a gas at STP?
1.0 atm/mol
22.4 L/mol
1.0 L/22.4 mol
22.4 atm/mol
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of helium would you find in a birthday balloon that had a volume of 6.2 L? Assume conditions are at STP.
12 moles
22.4 moles
3.6 moles
0.28 moles
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the density of carbon monoxide gas at STP conditions?
1.3 g/L
0.75 g/L
28 g/L
22.4 g/L
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