a) A
C
(b) Copper (II) sulphate is in solid form hence ions not free Sugar is a molecular compound hence non-ionic.
sharon kalunda answered the question on March 19, 2019 at 09:38
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Moist hydrogen sulphide gas was passed through a tube containing wet sulphur (IV) oxide gas as shown below.
(a) State the observation (s) made.
(b) Write an equation for the reaction above.
(c) Giving a reason, which substance undergoes reduction above.
Date posted: March 19, 2019. Answers (1)
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Date posted: March 19, 2019. Answers (1)
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Study the chart below and answer the question that follow:
(a) Identify
(i) the metal ions in solution K.
(ii) the white precipitate L.
(b) What property of the white precipitate L is illustrated by steps I and II
Date posted: March 19, 2019. Answers (1)
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Study the set-up below and answer the questions that follow.
(a) Write an equation for the reaction that took place.
(b) What observations is made in the combustion tube.
(c) Name another gas which could be used in place of carbon (II) oxide.
Date posted: March 19, 2019. Answers (1)
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Date posted: March 19, 2019. Answers (1)
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Date posted: March 19, 2019. Answers (1)
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(a) Explain why X and Z would not be expected to form a compound.
(b) Write an equation to show the effect of heat on the carbonate of Z.
(c) Write the formula for the most stable ion of element Y.
Date posted: March 19, 2019. Answers (1)
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Name substances. W,Y
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(i) Name the compound K.
(ii) Draw the structural formular of compound K.
Date posted: March 19, 2019. Answers (1)
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Date posted: March 19, 2019. Answers (1)
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(i) The oxidation half equation.
(ii) The reduction half equation.
(iii) The...(Solved)
A cell is represented as Zn(S) / Zn2+(aq) // Cu2+(aq) / Cu(S) write down
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(ii) The reduction half equation.
(iii) The overall cell equation.
Date posted: March 19, 2019. Answers (1)
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Mass of empty crucible and lid = 5.240g
Mass of crucible, lid and metal m = 5.352g
Mass of crucible, lid, metal oxide = 5.400g
(a) Determine the mass of
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(ii) Oxygen.
(b) Determine the empirical formula of the meat oxide.
Date posted: March 19, 2019. Answers (1)
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(i) Name the following substance
Gas W
Solid Y
ii) Write an equation for the formation of the brown precipitate .
Date posted: March 19, 2019. Answers (1)
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information below gives solution and their pH values. Study it and...(Solved)
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Classify the solution in the table above using the stated classification B, C & D
Date posted: March 19, 2019. Answers (1)
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Date posted: March 19, 2019. Answers (1)
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Date posted: March 19, 2019. Answers (1)
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(ii) A given mass of a gas had a volume of 40cm³ at 20°C and 625mm Hg of pressure....(Solved)
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temperature at which the volume of the gas would be 60cm³ at a pressure of 625mmHg.
Date posted: March 19, 2019. Answers (1)
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added to glucose in a beaker.
(b) State two...(Solved)
(a) State and explain the observations made when a few drops of concentrated sulphuric (VI) acid were
added to glucose in a beaker.
(b) State two uses of sulphuric (VI) acid.
Date posted: March 19, 2019. Answers (1)
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In an experiment air was passed through several reagents as shown in the flow chart below.
(a) Write an equation for the reaction which takes place in the chamber with magnesium powder.
(b) State the Role of concentrated potassium hydroxide solution.
(c) What observation is made in the chamber containing copper turnings.
Date posted: March 19, 2019. Answers (1)
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The diagram below shows apparatus commonly used in a chemistry laboratory.
(i) What is the name of the above apparatus.
(ii) Label the region of unburnt gases.
(iii) What would happen if part B was closed?
Date posted: March 19, 2019. Answers (1)