Question

How many mole of na are in 20 ml of 0.4m solution of na3po4?

Answer 1

Answer:

0.4m means 0.4 mole na3po4 in 1000g or 1000ml

so total number of moles in 20ml=0.4×20/1000=0.008moles

1mole has 3 mole na

so the required value=0.008×3=0.024moles

hope it helps

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