5184441
Description
Flashcards by Bee Brittain, updated more than 1 year ago
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Created by Bee Brittain
about 8 years ago
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| Question | Answer |
| Describe the steps to work out unknown information about a substance using amount and the equation together | 1) Work out the amount tin moles of whatever you can 2) Use the equation to work out the moles of the unknown chemical (ratio) 3) Work out the unknown information required |
| Describe the steps to identifying an unknown metal (4 steps) | 1. Set up conical flask with a bung and gas syringe with presser in 2. Weigh a sample of the metal and add it to the flask 3. using a measuring cylinder, add 25.0cm3 1.0moldm-3 HCl to the flask and quickly replace the bung 4. Measure the maximum volume of gas int he syringe |
| What is the equation for the percentage yield? | %age yield = Actual yield / theoretical yield |
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