Calculations
- Created by: Katie
- Created on: 23-04-13 11:36
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- Calculations
- Relative Atomic mass & formula mass
- ATOMIC MASS (Ar)- how heavy atoms are- being the mass number of an element (found in the periodic table). e.g. Helium's Ar = 4.
- FORMULA MASS (Mr)- how heavy compounds are- which is basically all the relative atomic masses added together. e.g. MgCl2= 24+(35.5)= 95.
- Untitled
- Relative Atomic mass & formula mass
- No. of moles= Mass(g) of the element ÷ Mr
- Moles
- ONE MOLE of a substance is EQUAL to its Mr in GRAMS
- No. of moles= Mass(g) of the element ÷ Mr
- Moles
- ONE MOLE of a substance is EQUAL to its Mr in GRAMS
- The relative formula mass of a substance in grams is known as one mole of the substance
- e.g. Iron has an Mr of 56. So one mole of iron weighs exactly 56g.
- The relative formula mass of a substance in grams is known as one mole of the substance
- Calculations
- Relative Atomic mass & formula mass
- ATOMIC MASS (Ar)- how heavy atoms are- being the mass number of an element (found in the periodic table). e.g. Helium's Ar = 4.
- FORMULA MASS (Mr)- how heavy compounds are- which is basically all the relative atomic masses added together. e.g. MgCl2= 24+(35.5)= 95.
- Untitled
- Relative Atomic mass & formula mass
- ONE MOLE of a substance is EQUAL to its Mr in GRAMS
- Moles
- No. of moles= Mass(g) of the element ÷ Mr
- e.g. Iron has an Mr of 56. So one mole of iron weighs exactly 56g.
- ONE MOLE of a substance is EQUAL to its Mr in GRAMS
- Moles
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