Opposites attract, like for example magnets, one is positive and the other is negatively charged, they will attract
We are given –
- Mass of
is 57.1 g and we are asked to find number of moles present in 57.1 g of 






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Now,Let's calculate the number of moles present in 57.1 g of 






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Answer:
b) sharpening a pencil
Explanation:
If you melt lead, boil water, or dissolve sugar in water, you can return all of them back to their original state. If you sharpen a pencil, you can't reattach the shavings as they were originally.