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

Answer Details

To calculate the number of moles of HCl, we need to use the formula: moles = concentration x volume We are given the volume of the solution as 20 cm^3, and the concentration as 0.75 M. First, we need to convert the volume to liters: 20 cm^3 = 20/1000 L = 0.02 L Then we can plug in the values: moles = 0.75 M x 0.02 L = 0.015 moles Therefore, the number of moles of HCl present in the solution is 0.015 mole. So the correct option is 0.015 mole.