Moles and Molar Mass-C5
- Created by: Shannon
- Created on: 24-04-13 17:54
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- Moles and Molar mass
- The mass of 1 mole of a substance is called its molar mass
- Relative atomic mass in grams
- Ca(NO3)2 Calcium Nitrate
- Ca=40, N=14x3=42x2=84, O=16x3=48x2=96
- 40+84+96=16-4g/mol
- Ca=40, N=14x3=42x2=84, O=16x3=48x2=96
- Metal carbonates will thermally decompose
- Metal carbonate ---> metal oxide+carbon dioxide
- Work out how much PbO is made when 267g of PbCO3 is heated
- Pb=207, C=12, O=16
- PbO=223g are made
- Pb=207, C=12, O=16
- Number of moles=mass of chemical/mol-ar mass
- The mass of 1 mole of a substance is called its molar mass
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