The molecular mass of octane is 114.22 g/mol. what is the mass of 22.05 mol of octane?

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

What is the independent variable in this investigation? mass volume sample number substance density

Why is the melting of ice a physical change ?