Answers Balance the nuclear equation below and hence identify Y. (^{238}_{94}U to ^{234}_{92}Th + Y)… (a) Balance the nuclear equation below and hence identify Y. (^{238}_{94}U to ^{234}_{92}Th + Y) (b) In a… Read More
Answers Give one reason why a collision between reactants may not produce new species. (b)… (a) Give one reason why a collision between reactants may not produce new species. (b) Explain, illustrating with… Read More
Answers A hydrocarbon X which decolorizes bromine water but has no action on ammoniacal silver trioxonitrate… A hydrocarbon X which decolorizes bromine water but has no action on ammoniacal silver trioxonitrate (V) solution was… Read More
Answers Give two reasons why carbon(IV) oxide is used for extinguishing fire (b) Explain briefly… (a) Give two reasons why carbon(IV) oxide is used for extinguishing fire (b) Explain briefly the water softening… Read More
Answers Write the electronic configuration of an element with atomic number 15, indicating the distribution… (a) Write the electronic configuration of an element with atomic number 15, indicating the distribution of electrons in… Read More
Answers Give three differences between electrovalent compounds and covalent compounds (b) List two physical properties… (a) Give three differences between electrovalent compounds and covalent compounds (b) List two physical properties of metals which… Read More
Answers (i) Give two uses of chlorine. (ii) State the action of chlorine on moist blue… (a)(i) Give two uses of chlorine. (ii) State the action of chlorine on moist blue litmus paper (b)… Read More
Answers Name one gaseous hydrocarbon which is (i) used for welding. (ii) a major raw… (a) Name one gaseous hydrocarbon which is (i) used for welding. (ii) a major raw material for the… Read More
Answers Give one oxide in each case which; (a) can act as a reducing agent (b)… Give one oxide in each case which; (a) can act as a reducing agent (b) can be used… Read More
Answers Sketch a curve to show how the solubility of a gas varies with increasing temperature Sketch a curve to show how the solubility of a gas varies with increasing temperature Explanation Solubility curve… Read More