Chemistry, 22.01.2021 20:40, parisaidan366

Question 1 (10 points) How many atoms are in 4.9 moles of Sodium (Na)?

a
112.7 atoms
b
6.022 X 10 ^ 23 atoms
c
2.95 X 10 ^ 24 atoms
d
8.14 X 10 ^ -24 atoms
Question 2 (10 points)
If you have 3.62 moles of Tin (Sn), how many grams do you have?

a
.031 grams
b
118.711 grams
c
32.79 grams
d
429.73 grams
Question 3 (10 points)
How many atoms are in a 121.4 gram sample of Aluminum (Al)?

a
2.71 X 10 ^ 24 atoms
b
4.5 atoms
c
1.97 X 10 ^ 27 atoms
d
5.44 X 10 ^ -21 atoms
Question 4 (10 points)
If you've got 3.011 X 10 ^ 24 atoms of Boron (B), how many grams do you have?

a
5.0 grams
b
54.055 grams
c
16.7 grams
d
1.82 grams
Question 5 (10 points)
How many grams are in 3 moles of Carbon Dioxide (CO2)?

a
132 grams
b
.068 grams
c
36 grams
d
84 grams
Question 6 (10 points)
Match the compounds with their molar masses.

Column A
1.
NH3

:
NH3

2.
NaCl:
NaCl
3.
S2O2

:
S2O2

4.
Ca3(PO4)2

:
Ca3(PO4)2

Column B
a. 310.174 g/mol
b. 17.031 g/mol
c. 96.13 g/mol
d. 58.443 g/mol
Question 7 (10 points)
A mole is a unit of measurement used in Chemistry that corresponds to 6.022 X 1023 atoms in every mole.

True
False
Question 8 (10 points)
Which has more mass?

a
1 mole of Carbon
b
1 mole of Oxygen
c
1 mole of Chlorine
d
1 mole of Hydrogen
Question 9 (10 points)
6.022 X 1023 can be rewritten as 602,200,000,000,000,000,000,000.

True
False
Question 10 (10 points)
If Carbon Dioxide has a molar mass of 44 grams / mole, then how many grams are in 2 moles of Carbon Dioxide.

a
88 grams
b
22 grams
c
44 grams
d
16 grams

Answers: 2

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Question 1 (10 points) How many atoms are in 4.9 moles of Sodium (Na)?

a
112.7 at...