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

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  =  

 Molar mass of Mg = 24g/mol

 Insert the parameters and solve;

        Number of moles  =   = 13.4mol of Mg

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.