Help! Can someone please explain and break down the answers to both? I’m so confused!

1) The moles of H2O that f am be obtained from 15.0mL of 0.250 M HCl

2) the volume of 0.150 M KMnO4 needed to replaced 1.85 mol MnCl2

Help Can someone please explain and break down the answers to both Im so confused1 The moles of H2O that f am be obtained from 150mL of 0250 M HCl2 the volume o class=