Moles
- Created by: MBerg
- Created on: 21-05-17 14:13
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- Moles
- Standard Solution
- 1mol/dm^3 x 250/1000= 0.25 moles
- Volumes of Gases
- Mass (g)= moles x RFM
- To calculate the relative formula mass: 1. Write the formula of the compound. 2. Write the numbers of each atom in the formula.
- 3. Insert the relative atomic mass for each type of atom. 4. Calculate the total mass for each element. 5. Add up the total mass for the compound.
- To calculate the relative formula mass: 1. Write the formula of the compound. 2. Write the numbers of each atom in the formula.
- Moles= Volume of Gas/24dm^3
- 1000cm^3= 1dm^3
- Mass (g)= moles x RFM
- 602 hexillion "things" in a mole- also known as Avagadro's Number
- 6.02 x10^23
- Molar Mass
- The molar mass of a substance is its relative formula mass in grams. The unit for molar mass is g/mol. For example:the Mr of water is 18, so its molar mass is 18 g/mol
- Remember: work out the relative formula mass of the substance in the question first, then give this number as g/mol for its molar mass.
- The molar mass of a substance is its relative formula mass in grams. The unit for molar mass is g/mol. For example:the Mr of water is 18, so its molar mass is 18 g/mol
- Standard Solution
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