What is the mass of 9.00 x 10 22 atoms of magnesium, Mg?

Hey there!

One mole of magnesium has a mass of 24.31 g.

This is 6.022 x 10²³ atoms of magnesium.

We want to convert 9.00 x 10²² atoms to moles.

For every one mole of magnesium, there are 6.022 x 10²³ atoms, so divide:

(9.00 x 10²²) ÷ (6.022 x 10²³) = 0.15 moles

Convert 0.15 moles to grams.

For every mole, there is 24.31 g.

So we multiply by 24.31. Also note that I am using the number stored in the calculator and not the rounded number I put.

0.15 × 24.31 = 3.6

The mass of 9.00 x 10²² atoms of Mg is 3.6 grams.

Hope this helps!

it means there are 3 atoms of oxygen

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).