How many grams of magnesium are in 7.43 x 10 to the 22 atoms of mg

Question

asked May 17, 2021 42.2k views

1 Answer

Anthony Bishopric · Answer 1 · 2021-05-21T03:26:18+0000

Mass of Mg=3 g

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

mol Mg in 7.43 x 10²² atoms :

$\tt (7.43* 10^(22))/(6.02* 10^(23))=0.1234$

mass Mg

$\tt mass=mol* MW\\\\mass=0.1234* 24.3=2.99\approx 3$