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Calculate the number of moles of HCl present in 20cm3

Calculate the number of moles of HCl present in 20cm3 of a 0.75M solution of the acid

A.

0.015 mole

B.

0.038 mole

C.

3.800 moles

D.

1.500 moles

View answer & explanation

Correct answer is A

Number of moles = (conc. in mol/dm3*volume in cm3)/1000
(0.75 * 20)/100 = 0.015 mole

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