How many molecules are ther in 3.5 moles of corbin dioxide

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

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