Energy Changes In Chemical And Physical Processes Questions and Answers

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Calculate the amount of moles at room temperature and pressure of methane which has a volume of 1450cm , temperature of 34.8 and M.G.V of 24000cm

asked Apr 28, 2023 in Chemistry Form 4 by 0740042XXX

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8 answers

Give two reasons why wood and charcoal are chosen for domestic heating.

asked Aug 17, 2021 in Chemistry Form 4 by anonymous

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1 answer

Define heat value of a fuel.

asked Aug 17, 2021 in Chemistry Form 4 by anonymous

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2 answers

The diagram below shows an energy level diagram for the formation of magnesium chloride. Study it and answer the questions that follow.

asked Aug 17, 2021 in Chemistry Form 4 by anonymous

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1 answer

Distinguish between hydration energy and lattice energy.

asked Aug 17, 2021 in Chemistry Form 4 by anonymous

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5 answers

State Hess’s law.

asked Aug 17, 2021 in Chemistry Form 4 by anonymous

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1 answer

Classify the following processes as either chemical or physical.

asked Jul 27, 2021 in Chemistry Form 4 by anonymous

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1 answer

In order to determine the molar heat of neutralization of potassium hydroxide, 200cm3 of 1M Hydrochloric acid and 200cm3 Of IM Potassium hydroxide both at the same initial temperature were mixed and stirred continuously with a thermometer. The temperature of the resulting solution was recorded after every 30 seconds until the highest temperature of the solution was attained. Thereafter, the temperature of the solution was recorded for a further two minutes.

asked Jul 8, 2021 in Chemistry Form 4 by anony mous

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1 answer

The lattice energy of sodium bromide and hydration energies of sodium and bromide ions are 733,406 and 335kj/mol respectively.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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2 answers

Define molar heat solution.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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