Doing my summer school work right now. Please help me pass I don’t want to take chemistry for the third time.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

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

Which of the following is not true about the atomic model of substances?