Danyal124
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Help!!! Urgent! Can someone explain how the answer is A also I don’t understand how to calculate dName:  0F908F43-0005-4F85-B6BA-AC851F468DC6.jpeg
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charco
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(Original post by Danyal124)
Help!!! Urgent! Can someone explain how the answer is A also I don’t understand how to calculate dName:  0F908F43-0005-4F85-B6BA-AC851F468DC6.jpeg
Views: 6
Size:  56.6 KB
All of this question relates to the definition of 1 mol of any substance and different methods for calculating the number of moles of a substance.

The definition of 1 mol is:
6.02 x 1023 particles or formula units of any substance.
For pure substances
moles = mass /relative mass
For solutions
moles = molarity x volume (in litres)
For gases
moles = PV/RT
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