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Determination Of The Atomic mass of Lithium.
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- Words:
- 1236
- Submitted:
- Fri Mar 12 2004
... Chemistry Coursework-Determination Of The Atomic mass of Lithium I am going to determine the relative atomic mass of lithium by two different methods: * Method 1: I will measure the volume of hydrogen produced when a known mass of lithium reacts with water. * Method 2: I will titrate the solution of lithium hydroxide produced. Results from method 1: 0.13g of lithium reacted with 100cm3 of water to produce 238cm3 of hydrogen gas. As I know that 1 mole of hydrogen gas occupies 24dm3. * Calculate the number of moles of hydrogen that I collected. 238/24000 = 9.916*10-3 To check this I will use the formula below. V=nRT * Deduce the number of moles of lithium that reacted. The ratio of lithium to hydrogen is 2:1 so the moles of hydrogen have to be multiplied by 2 to get the correct answer. 0.009916666*2 = 0.019833333 moles * Using the values from above and the original mass of lithium, calculate
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