Exp. 2 : Open book quiz-

Exp. 2 : Open book quiz-

9th Grade

5 Qs

quiz-placeholder

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Exp. 2 : Open book quiz-

Exp. 2 : Open book quiz-

Assessment

Quiz

Science

9th Grade

Easy

Created by

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