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There is decrease in mass because the gaseous products escape to the atmosphere.
ambrose92 answered the question on November 15, 2017 at 19:16
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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State two factors which determine the speed of photoelectrons emitted from a metal surface
Date posted: November 12, 2017. Answers (1)
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State the main reason for electroplating metallic items.
Date posted: November 12, 2017. Answers (1)
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Crude oil is a source of many compounds that contain carbon and hydrogen only.
i) Name the process used to separate the components of crude oil.
ii) On what two physical properties of the above components does the separation depend?
Date posted: November 12, 2017. Answers (1)
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During extraction of iron in the blast furnace, state the uses of the following in the furnace.
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b) Waste gases leaving the furnace
c) Limestone
Date posted: November 12, 2017. Answers (1)
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What observation would be made if chlorine gas is bubbled through aqueous potassium iodide?
Explain
Date posted: November 12, 2017. Answers (1)
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An element in period 4 of the periodic table forms a basic oxide of formula P2O.
a) What is the valency of P?
b) What name is given to the group of elements in which element P belongs
Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 10, 2017. Answers (1)
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Date posted: November 10, 2017. Answers (1)
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Give two examples of each of the following (a)Biological Samples.(b)Agricultural samples.
Date posted: November 10, 2017. Answers (1)
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Name the intermolecular forces of attraction in water.
Date posted: November 9, 2017. Answers (1)
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ii) State one disadvantage of using hydrogen fuel instead of methane.
Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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(a) What is air pollution?
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Date posted: November 9, 2017. Answers (1)