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# C2 Unit 3 watch

1. Can anyone please explain percentage yield and all that stuff?
2. (Original post by tabby.m16)
Can anyone please explain percentage yield and all that stuff?
The calculation for finding percentage yield is luckily a simple one and just requires you to know 2 things, the theoretical amount of a substance you should have (ie if you were told that the experiment should yield a product of 20 g), and the actual amount that was recorded (ie how much did you actually get in the experimental results, this is less than the theoretical amount due to a variety of reasons)

Once you have both of those values you can just plug it in to the equation below to calculate the percentage yield. You can also rearrange this to make either the actual yield or theoretical yield to be the subject of the equation if that's what you're trying to find.

3. thank you so much

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