The student made 250 cm3 of a solution of citric acid of concentration 0.0500 mol/dm3 Calculate the mass of citric acid (C6H8O7) required. Relative atomic masses (Ar): H = 1 C = 12 O = 16

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

One similarity and one difference between an element and a mixture of elements

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car