Question 1

1. there are 2 oxygen atoms
2. CO2
3. OCO
4. CO2(aq) reversible arrow CO2(g)
5. The concentration will decrease because some of the CO2 gas will escape. This means that it is not at equilibrium anymore. It will also therefore become less fizzy.

Question 2

1. 3+31+(4x16) = 98g/mol

2. n = m/Mr

   n = 39/342.3

   n = 0.114 mol

3. C5H12O5

4. carboxylic acid, ester

Question 3

1. 2,8,3
2. it is more resistant to corrosion caused by water, acid and bases which means that it can withstand extreme weather conditions and handling. It has a lower density which means that it is easier to carry more cans as they will be lighter and cheaper.

Question 4

1. / table

2. x axis: temperature ( degrees C)

   y axis: mass of sugar dissolved (g)

3. C

4. Based on graph C, the outlier is at 60 degrees Celcius, it should be 290g

5. liquid, solid