Moles

  1. What formula do you have to use to calculate mass, the Mr or moles ?
    • mass = Mr x Moles
    • Mr = Mass/ moles
    • Moles = Mass/ Mr
  2. 0.5 moles of substance X has a mass of 87g. What is the relative formula mass of X?
    87/0.5 = 174
  3. What is the mass of carbon monoxide in 3.2 moles?
    (Mr = 28 )
    3.2x28 = 89.6
  4. How many moles are in 156g of Al2O3?
    (Al = 54, O = (16x3) 48)
    54+48 = 102 156/102 = 1.5
Author
JuliaOrzel28
ID
331361
Card Set
Moles
Description
moles
Updated