Question.

8. Calculate the volume of 0.6M sulphuric (VI) acid solution needed to neutralize 30cm3 of 0.2M potassium hydroxide.

Answer.

 H2SO4(aq) + 2NaOH(aq) = Na2SO4(aq) +2H2O(l)

Moles of KOH =Molarity X Volume = 30×0.2/1000

=0.006 MOLES

Moles of H2SO4 reacting ratio 1:2

moles of H2SO4 =0.006/2

= 0.003 moles

Volume of H2SO4= Moles/Molarity x1000

                              = 0.003/0.6×1000

                              = 5cm3

Questions.

Explain the role/use of the following features in a word processor: (4 marks)
(a) Find and Replace.
(b) Undo and Redo.
(c) Thesaurus.
(d) Auto-correct.

Answers.

Explain the role/use of the following features in a word processor:
(a) Find and replace. Allows users to search for specific words, phrases, or characters within a document and replace them with another word, phrase, or character.
(b) Un-do and Re-do. It provides the ability to reverse or redo the most recent action performed in the document.
(c) Thesaurus. It provides synonyms and related words for a selected word or phrase, aiding users in finding alternative terms with similar meanings.
(d) Auto correct. It’s a feature that automatically corrects common spelling mistakes.