Chapter 3 Part 2
Quiz
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Chemistry
•
University
•
Medium
Mary McDougald
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11 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is the percent by mass of magnesium in MgO?
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is the empirical formula if you have 88.80% copper and 11.20% oxygen?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine the empirical formula when a sample has a composition of 20% Ca and 80% Br.
CaBr
CaBr2
Ca2Br
Ca2Br2
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Molar mass of NaOH is ______________________
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is a solvent?
The substance that does the dissolving in a solution.
The substance that is being dissolved in a solution.
The mixing of different substances.
The process in which neutral molecules lose or gain electrons.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which equation is used to find molarity?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
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