A homogeneous mixture is?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

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

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure