Quantitative Chemistry

Question 1

How do you find the Relative Molecular Mass (RMM) of a molecule?

Answer 1

Add RAM of all atoms in the molecule

Question 2

What is the RMM of Water? (H20)

Answer 2

H = 1
0 = 16
2 x 1 (H) + 1 x 16 (O)
16 + 2 = 18

Question 3

Describe what a mole is?

Answer 3

A word that represents a number, much like a dozen represents 12

Question 4

1 mole = ?

Answer 4

6.02 x 10^23

Question 5

If H2O has a RMM of 18 and in a glass of water there is 180g, how may moles of water are there?

Answer 5

10 moles

Question 6

What is the molar mass?

Answer 6

The mass of 1 mole of substance in grams

Question 7

A solution is a mixture consisting of a _____ dissolved in a ______.

Answer 7

Solute, solvent

Question 8

Concentration =

Answer 8

Amount of solute in volume of solution

Question 9

Concentration of a solution is usually measured in _____?

Answer 9

gL-1 or molL-1

Question 10

Concentration can be given as a percentage, e.g beer is typically 4% alcohol. In percentage concentration, volume is given in _____

Answer 10

100ml