One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in two moles of copper? (5 points) Group of answer choices

63 atoms
64 atoms
1.2 x 1024 atoms
6 x 1023 atoms

Matches the chemical name of each oxide of phosphorus to its chemical formula

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

0.09 moles of sodium sulfate in 12 ml of solution