F – Thin outer region.
G – Colourless region.
sharon kalunda answered the question on March 27, 2019 at 05:32
- Study the diagram below and use it to answer the questions that follow.(Solved)
Study the diagram below and use it to answer the questions that follow.
(a) Name two reagents that are reacted to produce both Carbon (IV) Oxide and Carbon (II) Oxide.
(b) Write the equation for the reactions that took place in the wash bottle.
(c) Give a reason why Carbon (II) Oxide is not easily detected.
Date posted: March 27, 2019. Answers (1)
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Date posted: March 26, 2019. Answers (1)
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the tests as shown in the table below. Complete the table...(Solved)
A student put calcium carbonate and calcium hydrogen carbonate in separate test tubes and performed
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Date posted: March 26, 2019. Answers (1)
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Study the scheme below and answer the questions that follow.
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(b) Write an equation for the reaction in Step (II) that produces solid F
Date posted: March 26, 2019. Answers (1)
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The products of a burning candle were passed through a tube containing calcium oxide as shown in the diagram below.
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(b) Name two gases that came out through tube R.
Date posted: March 26, 2019. Answers (1)
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Excess Carbon (II) Oxide was passed over a heated sample of an oxide of iron as shown in the diagram below. Study the diagram and the data and use it to answer the questions that follow
Mass of empty dish =6.72g
Mass of empty dish + oxide of iron =9.04g
Mass of empty dish + residue=8.40g
(a) Determine the formula of the oxide of iron given that the relative formula mass of oxide of Iron = 232, Fe = 56.0, O=16.0
(b) Write an equation for the reaction which took place in the dish
Date posted: March 26, 2019. Answers (1)
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(b)Write an equation for the reaction between isotope B and Beta particles
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Date posted: March 26, 2019. Answers (1)
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The set up below was used to electrolyze molten lead (II) bromide.
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Date posted: March 26, 2019. Answers (1)
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Use the information below and answer the questions that follow .The letters are not the actual symbols of the elements.
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Date posted: March 26, 2019. Answers (1)
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The table below gives some properties of three elements X,Y and Z.
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Date posted: March 26, 2019. Answers (1)
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The diagram below is a cross section of a dry cell. Study it and answer the questions that follow.
(i) Write the equation for the reaction in which electrons are produced.
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Date posted: March 26, 2019. Answers (1)
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(a) Write the electron arrangement of the elements Q and R...(Solved)
The electron arrangement of ions Q2- and R3+ are as 2, 8, 8, and 2,8respectively.
(a) Write the electron arrangement of the elements Q and R
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Date posted: March 26, 2019. Answers (1)
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Study the flow chart below and answer the questions that follow.
i) Name the process in step I and the conditions for the reaction in step I
Name of process
Conditions
ii) Identify substance N
iii) Give
I. One disadvantage of the continued use of substance such as M
II. The name of the process that takes place in step III
III. The name and structural formula of the substance Q
Name
Structural formula
Date posted: March 26, 2019. Answers (1)
- Below is a set up of the apparatus that is used to prepare sulphur trioxide.
Name
I. – Gas N -
II. – Gas M –
III. – Catalyst...(Solved)
Below is a set up of the apparatus that is used to prepare sulphur trioxide.
Name
I. – Gas N -
II. – Gas M –
III. – Catalyst –
IV. – Solid Y –
Date posted: March 25, 2019. Answers (1)
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Date posted: March 25, 2019. Answers (1)