Calculations Ch 3

Question 1

Mass in g from mol

Answer 1

Mass = number of mol x molar mass

M = n x Mm

Question 2

Number of atoms from mol

Answer 2

1 mol =6.022 x 10^23 atoms

Question 3

Number of mol from number of atoms

Answer 3

N = number of atoms/ avo. Number

Question 4

Number of atoms from mass in g

Answer 4

Grams divided by molar mass x avo. Number

Question 5

Mass from number of atoms

Answer 5

Number of atoms divided by avo. Number x Mm

Question 6

Number of molecules or formula units from mol

Answer 6

Mol x avo. Number

Question 7

Number of molecules or formula units from g

Answer 7

Mass divided by Mm x avo number

Question 8

Mass from number of molecules or formula units

Answer 8

Molecules divided by avo. Number x molar mass

Question 9

Number of moles from g

Answer 9

Number of mol= mass/ molar mass

N = m/Mm