(i) Increases/rises.
(ii) U – C1 – C4
V – C4 – C15
W – C9 – C16
X – C15 – C25
Y – C20 upwards
maurice.mutuku answered the question on September 16, 2019 at 05:38
- 15cm³ of a gaseous hydrocarbon reacted completely with 45cm³ of oxygen. 30cm³ of carbon (IV) oxide were formed.
Determine the formula of the hydrocarbon given that...(Solved)
15cm³ of a gaseous hydrocarbon reacted completely with 45cm³ of oxygen. 30cm³ of carbon (IV) oxide were formed.
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Date posted: September 16, 2019. Answers (1)
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Mass of dish = 15.86g.
Mass of dish...(Solved)
The results of an experiment to determine the solubility of potassium chlorate in water at 30°C were as follows.
Mass of dish = 15.86g.
Mass of dish + saturated solution at 30°C = 26.8g.
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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(i) 
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Date posted: September 13, 2019. Answers (1)
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(i) Write an equation for the formation of rust.
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Calculate:
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(ii) The residual air.(Solved)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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(i) R
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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A 2.0g of limestone was allowed to react with 200cm3 of 0.2MHCl acid. The excess acid required 49.6cm3 of 0.1M NaOH solution. Calculate the percentage of calcium carbonate in the limestone. (Ca = 40, C = 12, O = 16)
Date posted: September 13, 2019. Answers (1)