Question

slove it I make you brain list ​

Answer 1

Answer:In chemistry, the molar mass is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. The molar mass is a bulk, not molecular, property of a substance. ... However, for historical reasons, molar masses are almost always expressed in g/mol.

Explanation:mass of 0.5 moles of N₂ = 14 grams .  

36.46 g/mol

48g of Helium  

Atomic mass of He = 4

Number of particles = Number of Moles x N     (Where N is Avogadro number)

= (given weight/ Gram atomic weight) x 6.023 x 10^23

= (4/48)x 6.023 x 10^23

= 6.023 x 10^23/12

= 0.5 x 10^23 Helium particles

∴ 48 g of He contains 12.046 x 10^23 moles.

30.07 g/mol