
Unit 5 Recap
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
Kathryn Welsh
Used 4+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of "molar mass" ?
The number of particles there are in an element
The mass of one mole of a substance
The mass of one gram of a substance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of Nitrogen?
58.69 g/mol
7 g/mol
14 g/mol
28 g/mol
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Check all options that equal 1 mol
40 g of Calcium
14 g of Nickel
32 g of Sulfur
12 g of Carbon
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of "molecular formula" ?
The smallest whole number ratio of element atoms in a compound
The actual ratio of element atoms on a compound
A bunch of elements put together
How many molecules there are in a substance
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine the empirical formula:
Caproic acid is made of C, H and O. A 0.225 g sample contains 0.140 g carbon and 0.0235 g hydrogen
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A chemist has 2.00 moles of iron atoms in a beaker, how many atoms does she have?
2.00 atoms
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A compound composed of hydrogen and oxygen is found to contain 0.59 g of hydrogen and 9.40 g of oxygen. The molar mass of this compound is 34.0 g/mol.
Find the empirical formula.
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