Vapour pressure of water at 12℃ is 10.5 mmHg. What would be the volume of the dry gas
at 15℃ and 757 mmHg.
5.6g of a mixture of calcium rt6y7uu carbonate and sand are treated with an excess of dilute
hydrochloric acid, and 0.924 g of carbon dioxide is produce. What are the percentages of
calcium carbonate and sand in the original mixture.(Na =23,C = 12, O = 16)
2017-2018
Basic Education High School, Kan
Grade 11 , Chemistry, July C.E.T ,Time Allowed (45) minutes
1.Fill in the blanks with the correct word(s), phrase(s) ,term(s), etc..as necessary.(5marks)
(i) A charged particle is a (an) …… .
(ii) Variation of temperature can affect ……. and volume of the gas.
(iii) 100℃ is equivalent to ……..K.
(iv) A molar solution dissolves ……. of solute in 1 dm3 of the solution.
(v) Compound found between metals and non- metals will have
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