In the manufacture of hydrogen from methane and steam, carbon monoxide is produced as anunwanted side product. The amount of carbon monoxide is reduced by mixing the gases withsteam when…

Which of the following ionic equations are correct?1 X+ e- → X2 X- e- → X3 O2- + 2e- → O4 O2- - e- → O25 2I- 2e- → I6…

Find the positive solution of the following simultaneous equations: Answer: 14) x = 3 ; y = 1 2x – y = 5y = 2x – 5 Substitute this expression…

A pulse of frequency 100kHz is emitted from an ultrasound scanner, and is reflected from a fetus 10cm below the transmitter placed on the mother’s abdomen. The speed of sound…

Plugs of cotton wool containing concentrated aqueous ammonia and concentrated hydrochloric acid are placed at opposite ends of a tube, at room temperature. A white ring of solid ammonium chloride…

The diagram shows the inheritance of a condition in a family. (i) Identify the three individuals who must be heterozygous for this condition.(ii) What are the chances that a second…