S 1.4

Question 1

What is avogadro’s constant?

Answer 1

6.02 x 10^23 (one mole of substance equals this number of particles)

Question 2

What is the relative atomic mass formula?

Answer 2

Weighed average mass of one atom of the element/ 1/12 mass of one atom of carbon 12.

Question 3

Moles formula pyramid.

Answer 3

Mass/ Moles x Mr

Question 4

When calculating, how do you get from particles to mass?

Answer 4

Number of particles (Divide by Avogadro’s constant), Number of moles (Multiply by Mr), mass in grams

Question 5

How do you calculate the Ar

Answer 5

Weighed average of 1 atom of element/1/12 mass of 1 C12 atom