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Moles LOC 23-24

Last updated over 2 years ago

10 questions

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Question 1

1.

Question 2

2.

Question 3

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Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

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

24.31 g 

10.81 g 

53.78 g 

26.98 g

What is the molar mass of sugar C12H22O11

322.4 g

123.34 g

455.4 g

342.3 g

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

32.06 g 

28.76 g

75.61 g 

27.76 g 

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

What is the percent composition of N in NH3?

11.5%

13.2%

17.6%

82.4 %

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 

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

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

How many total atoms are in one molecule of NH4?

5

6

2

4

How many total atoms are in 2.5 moles of NH4?

3.01E23 atoms

2.08E-23 atoms

6.02E23 atoms 

7.53E24 atoms