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

thats a little if u want the answer just look it up on google thats what i do haha : )

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

answerto predict;