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FINAL REVIEW 2

Chemistry

KG - University

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FINAL REVIEW 2
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54 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which compound has the smallest molar mass?

CO
CO2
H2O
H2O2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles are in 16.94g of water?

16.94
0.9403
305.2
1.063

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of 1.2 moles of IrI3?

570 g
690 g
320 g
957 g

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the molar mass of B2(CO3)3?

81.632 g/mol
94.842 g/mol
38.822 g/mol
201.648 g/mol

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titanium?

1 g Ti / 47.84 mol Ti
1 mol Ti / 47.84 g Ti
47.84 mol / 1 g Ti
47.87 g Ti / 1 mol Ti

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Avogadro's number of representative particles is equal to one_____.

kilogram
gram
kelvin
mole

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the molar mass of (NH4)2CO3 ?

144 g
138 g
96 g
78 g

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