contestada

6 How many moles are in a 321 g sample of magnesium?
F 13.2 mol Mg
G 13.4 mol Mg
H 13.6 mol Mg
J 13.8 mol Mg

Respuesta :

quasarJose

Answer:

13.4mol of Mg

Explanation:

Given parameters:

Mass of magnesium = 321g

Unknown:

Number of moles  = ?

Solution:

The number of moles of a substance is given as;

  Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

 Molar mass of Mg = 24g/mol

 Insert the parameters and solve;

        Number of moles  = [tex]\frac{321}{24}[/tex]   = 13.4mol of Mg

Otras preguntas