Can someone please help me with every questions I’m gonna get slapped if I don’t do this assignment

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Amixture with the same composition throughout is!