Moles

Question 1

What is the definition of the mole?

Answer 1

Amount of substance (n) which contains as many elementary particles as there are atoms in exactly 12g of carbon 12

Question 2

What is Avogrado’s constant?

Answer 2

6.02x10 23

Question 3

What is the definition of Avogadro’s constant?

Answer 3

Number of particles in each mole of carbon 12

Question 4

How can you convert the number of particles into moles?

Answer 4

Moles (n) = Number of particles / 6.02x10 23

Question 5

How do you convert moles into the number of particles?

Answer 5

Number of particles = Moles x 6.02x10 23

Question 6

How do you calculate the moles for an element?

Answer 6

Moles (n) = Mass (g) / Relative atomic mass (Ar)

Question 7

How do you calculate the moles for a simple molecule?

Answer 7

Moles (n) = Mass (g) / Relative molecular mass (Mr)

Question 8

How do you calculate the moles for ionic compounds?

Answer 8

Moles (n) = Mass (g) / Relative formula mass

Question 9

How do you calculate the mass for elements?

Answer 9

Mass (g) = Moles (n) x Relative atomic mass (Ar)

Question 10

How do you calculate the mass for simple molecules?

Answer 10

Mass (g) = Moles (n) x Relative molecular mass (Mr)

Question 11

How do you calculate the mass for ionic compounds?

Answer 11

Mass (g) = Moles (n) x Relative formula mass

Question 12

How do you calculate the Mr when the mass & moles is given?

Answer 12

Mr = Mass (g) / Moles (n)