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Moles LOC 23-24

Last updated over 2 years ago

10 questions

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Question 1

1.

How many grams are in 1 mole of Aluminum (Al)?

24.31 g 

10.81 g 

53.78 g 

26.98 g

Question 2

2.

What is the molar mass of sugar C12H22O11

322.4 g

123.34 g

455.4 g

342.3 g

Question 3

3.

Given 0.25 moles of CaCl2 how many grams do you have ?

32.06 g 

28.76 g

75.61 g 

27.76 g 

Question 4

4.

How many Liters of gas do you have given 2 moles of CH4?

22.4 L

44.8 L

0.089 L

88.8 L

Question 5

5.

What is the percent composition of N in NH3?

11.5%

13.2%

17.6%

82.4 %

Question 6

6.

How do you convert from moles to atoms when you have an element?

use Avogadro's Number

Use 22.4 

Use the molecular weight 

Count the number of atoms 

Question 7

7.

How do you convert from moles to atoms when you have a compound?

use Molecular weight and counting atoms

Use Avogadro's number

use 22.4 and counting atoms

use Avogadro's number and counting atoms

Question 8

8.

How many atoms do you have given 0.75 moles of Titanium?

5.33E23 atoms

1.26E24 atoms

4.52E23 atoms

1.26E-24 atoms

Question 9

9.

How many total atoms are in one molecule of NH4?

5

6

2

4

Question 10

10.

How many total atoms are in 2.5 moles of NH4?

3.01E23 atoms

2.08E-23 atoms

6.02E23 atoms 

7.53E24 atoms