munchyyy munchyyy
  • 01-11-2019
  • Chemistry
contestada

The mass of 0.125 mol of nitrogen is
A 224g
B 1.75g
C 3.50g
D 112g

Respuesta :

Officialalehpeter
Officialalehpeter Officialalehpeter
  • 09-03-2020

Answer:C - 3.50g

Explanation:

To solve this problem, nitrogen is a gas and it's always two atoms of it in every reaction.

Using the formula

n = m/ Mm

n - number of mole

m - number of mass

Mm - number of molar mass

n = 0.125 mole

The molar mass of N2 = 14.0067 * 2 = 28.0134g/mol

(N - 14.0067 )

n = mass / molar mass

0.125 mol = mass / 28.0134g/mol

Mass = 0.125 * 28.0134

= 3.501675

= 3.50g

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