Calculating Moles

If you want 1.55 moles of nitrogen trichloride, how many grams should you measure out?

• 0.0129 g

• 120. g

• 187 g

• 9.33 g

Read the question below & answer. Hint: You will use Avogadro's number to calculate your answer.

• A

• B

• C

• D

• A

• B

• C

• D

Tags

NGSS.HS-PS1-7

In one Mole of Aluminum, there are _____ g/mole. (Round to WHOLE numbers)

• 24

• 25

• 26

• 27

The mass in grams of 1 mole of a pure substance is called:

• Avogadro's number

• Atomic Unit

• Molar Mass

• All of the above

If we wanted to calculate the mass of 3.01 moles of Iron , What would go on the top box??

• Moles of Fe

• Atoms of Fe

• Grams of Fe

• Particles of Fe

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles

• 8 moles

• 16 moles

• 2 moles

Tags

NGSS.HS-PS1-7

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6

• 2

• 3

• 1

Tags

NGSS.HS-PS1-7

Why is calculating the number of moles useful?

• To use the amount of reactants that will actually react.

• To know how chemicals behave

• To observe the chemical change

• To change the oxidation number

Tags

NGSS.HS-PS1-5

How many moles of sodium in NaCl?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7