Molecular Mass

2,60x102 grams of bromine (Br) is equal to 1,627 moles Br2.

This depends on the concentration of sodium chloride in water.

This mass is 173,124 g.

4,0 moles of the manganese contain 219,75 g.

19,55 moles of gold is equal to 3 850,7 g.

The molarity is 6 mol/l.

Yes, the mol is the SI unit of concentration.

120 g calcium is equal to 3 moles.

We need 8 moles potassium chloride.

This mass is 631,75 g K2O.

There are 18.9 moles in 225.8 mg. This is a math problem.

300 g sulfur is equivalent to 9,357 moles.

1,26 moles hydrogen chloride (not hydrochloric acid) is 45,94 g.

The existence of Cu2O3 was not validated.

250 g iron (III) oxide is equal to 1,565 moles.

11 g x 1 mol Si/28.0855 g Si= 0.39 mol Si 205g He x 1mol He/4.002602 g He=51.2 mol He

Sand is not a compound and haven't a molar mass; also different types of sand exist.

2,9 moles of bromine is equivalent to 463,4432 g.

4.56 moles Kr x 83.798 g/mole = 382.119 grams = 382 grams (to 3 significant figures)NOTE: You should not use more than 3 significant figures since 4.56 moles limits the precision. Thus the answers of 381.66g and 382.1188 g are incorrect.

5 moles of carbon is 60,055 g.
5 moles of sodium is 114,949 g.

The answer is 0,44 moles.

The atomic masses of carbon and hydrogen are 12 and 1 respectively. Chlorine, nitrogen and oxygen have 35.5, 14 and 16 in order. So the molecular mass of this compound is 284.5 grams per mole.

6.1010 g of gold is equivalent to 3,046.108 moles.

At a constant volume the pressure increase.