I have set up the following problem so you will have a chance to do it before seeing the answers and how the answers are calculated.

Check your answer...do you agree? Great if you do. If you do not check the Solution: below the table to see how the molar mass of Mois determined.

The next answer is the number of grams of the sample. Try to determine the value before clicking on the link.

Formula

M , Molar Mass

(gmol^-1)

mass of sample

(g)

n, number of

moles of sample

N, number of atoms,

molecules or formula units

Mo

95.9 2nd answer

62.8 Solution:

To determine the molar mass of Mo we just need to look up its atomic mass in the periodic table. The atomic mass is;

Mo 95.9 u

Just remember to express the molar mass we replace the unit 'u' with the units gramsmol^-1. So the molar mass of molybdenum is 95.9 gmol^-1. This is read as 1 mol of molybdenum weighs 95.9 g.

Check your answer...do you agree? Great if you do. If you do not check the Solution: below the table to see how the molar mass of Mo is determined.

The next answer is the number of grams of the sample. Try to determine the value before clicking on the link.

Formula

M , Molar Mass

(g­mol-1)

mass of sample

(g)

n, number of

moles of sample

N, number of atoms,

molecules or formula units

Mo

95.9

2nd answer

62.8

Solution:

To determine the molar mass of Mo we just need to look up its atomic mass in the periodic table. The atomic mass is;

Mo 95.9 u

Just remember to express the molar mass we replace the unit 'u' with the units grams­mol-1. So the molar mass of molybdenum is 95.9 g­mol-1. This is read as 1 mol of molybdenum weighs 95.9 g.

Check your answer...do you agree? Great if you do. If you do not check the Solution: below the table to see how the molar mass of Mois determined.

(gmol^-1)

Just remember to express the molar mass we replace the unit 'u' with the units gramsmol^-1. So the molar mass of molybdenum is 95.9 gmol^-1. This is read as 1 mol of molybdenum weighs 95.9 g.