Moles

What formula do you have to use to calculate mass, the Mr or moles ?
- mass = Mr x Moles
- Mr = Mass/ moles
- Moles = Mass/ Mr
0.5 moles of substance X has a mass of 87g. What is the relative formula mass of X?

87/0.5 = 174
What is the mass of carbon monoxide in 3.2 moles?
(Mr = 28 )

3.2x28 = 89.6
How many moles are in 156g of Al₂O₃?
(Al = 54, O = (16x3) 48)

54+48 = 102 156/102 = 1.5

Author

JuliaOrzel28

331361

Card Set

Moles

Description

moles

Updated

2017-05-11T13:56:43Z

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