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
Correct Answer: Option A
Explanation
Number of moles = (conc. in mol/dm3*volume in cm3)/1000
(0.75 * 20)/100 = 0.015 mole