Chemistry Past Questions and Answers

The structural component that makes detergent dissolve more quickly in water than soap is

A liquid that will dissolve fat is?

What mass of K₂CrO₄ is required to prepare 250cm³ of 0.020 mol dm³ solution?
[K₂CrO₄ = 194.2g mol^-1]

Farmlands affected by crude-oil spillage can be decontaminated by

When 10g of sodium hydroxide is dissolved in 1000cm³ of water, the sodium formed is approximately
[Na = 23, H = 1, O = 16]