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Jasmine's age + 9 = Ella's age: therefore, J + 9 = E4 x Ella's age = Katherine's age: therefore, 4E = KThe sum of Jasmine's, Ella's and Katherine's ages = 72: therefore, J + E + K = 72take J + E + K = 72 ...

Stage 1: 1-2 marksFirstly, draw and explain the difference in structures between the two acids.
Stage 2: 3-4 marksThe unionised COOH groups in the ethanedioc acid contain two very el...

(3c+b)/2 = c + a To make c the subject of this equation, we first must get all the c variables together on one side of the equation.To do this, first we shall multiply both sides by 2 to remove it from th...

This question is asking about the demerit good of fizzy drink consumption. this consumption leads to a negative externality (external cost to society) - this could be added cost to NHS from the increased ...

Glycolysis takes place in the cytoplasm and comprises two stages: phosphorylation and oxidation. In phosphorylation, glucose is phosphorylated using two molecules of ATP to form glucose phosphate and then...