Molecular Mass

3,99 moles of Kr have 334,35 g.

0,125 L neon is equivalent to 0,0056 moles.

Cannot answer this question without knowing the EMPIRICAL formula.

987 grams of Ra(OH)2 is equal to 3,78 moles.

The molar mass of Li2O is 29,88 g (the sum of atomic weights of 2Li and 1O).

The volume occupied by 2.12 moles of nitrous oxide is 9.35. A mole is described in chemistry as an amount of pure substance containing the same number of chemical units as there are atoms.

The definition of 0.175 m KF is that 1 kg of water contains 0.175 moles of KF. Thus, 347 g of water is equivalent to 0.347 kg, and to find moles of KF, you calculate as follows:
0.175 moles/Kg x 0.347 kg = 0.0607 moles of KF are present (3 significant figures).

The answer is 0,125 moles.

97,5 g of oxygen is equal to 5,416 moles.

One mole of oxygen is 32 g.

1815.08

This is the combined gas law: pV=nRT.

0.125 moles

Al+HCl===> AlCl3+H2 Is the reaction. You need &.2 moles of HCl.

This depends on the dilution ratio.

0.377 grams of Kr is equal to 0,0045 moles.

The volume is 3,81 L.

This is a chemical calculation. 2.5 moles will C reacting with O2.

Four moles of potassium chlorate are needed.

The equivalent in moles is 6,03.

The mass is 467,52 g.

The mass of 7,346 moles of Ca(OH)2 is 544,3 g.

The value is 0,0025 moles.

The answer is 88 moles.

16 grams of oxygen how many moles is 0,5 moles.