Diagnosis of cancer
Xraying
Wincate 1 answered the question on September 19, 2017 at 13:44
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Explain why calcium Oxide is not used to dry hydrogen chloride gas.
(Solved)
Explain why calcium Oxide is not used to dry hydrogen chloride gas.
Date posted:
September 19, 2017
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Answers (1)
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Sulphur is extracted from underground deposits by frasch process. State two physical properties of Sulphur that makes it possible to be extracted through this process.
(Solved)
Sulphur is extracted from underground deposits by frasch process. State two physical properties of Sulphur that makes it possible to be extracted through this process.
Date posted:
September 19, 2017
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Answers (1)
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Name a suitable drying agent for hydrogen chloride gas
(Solved)
Name a suitable drying agent for hydrogen chloride gas
Date posted:
September 19, 2017
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Answers (1)
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Explain why iodine is a bad conductor of heat and electricity
(Solved)
Explain why iodine is a bad conductor of heat and electricity
Date posted:
September 19, 2017
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Answers (1)
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Define the term esterification
(Solved)
Define the term esterification
Date posted:
September 19, 2017
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Answers (1)
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What is the meaning of half life of a substance?
(Solved)
What is the meaning of half life of a substance?
Date posted:
September 19, 2017
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Answers (1)
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Explain how alkaline solution is useful on acidic soil
(Solved)
Explain how alkaline solution is useful on acidic soil
Date posted:
September 18, 2017
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Answers (1)
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Explain why hard water flowing in lead pipes may be safer for drinking than soft water
flowing in the same pipes.
(Solved)
Explain why hard water flowing in lead pipes may be safer for drinking than soft water
flowing in the same pipes.
Date posted:
September 18, 2017
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Answers (1)
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In terms of structure and bonding. Explain why water (H2O) is a liquid at room temperature while Hydrogen sulphide (H2S) is a gas.
(Solved)
In terms of structure and bonding. Explain why water (H2O) is a liquid at room temperature while Hydrogen sulphide (H2S) is a gas.
Date posted:
September 18, 2017
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Answers (1)
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Define solubility
(Solved)
Define solubility
Date posted:
September 18, 2017
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Answers (1)
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a) State and explain the observations made when chlorine water is exposed to light after 24 hours. (b)State one use of chlorine gas
(Solved)
a) State and explain the observations made when chlorine water is exposed to light after 24 hours.
b)State one use of chlorine gas
Date posted:
September 18, 2017
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Answers (1)
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Highlight the steps followed when lighting a Bunsen burner
(Solved)
Highlight the steps followed when lighting a Bunsen burner
Date posted:
September 18, 2017
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Answers (1)
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5.0g of calcium carbonate were allowed to react with 25cm3 of 1.0M hydrochloric acid until there was no further reaction. Calculate the mass of calcium...
(Solved)
5.0g of calcium carbonate were allowed to react with 25cm3 of 1.0M hydrochloric acid until
there was no further reaction. Calculate the mass of calcium carbonate that remained
unreacted(Ca = 40, C = 12, O = 16).
Date posted:
September 18, 2017
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Answers (1)
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Give two physical properties of hydrogen gas
(Solved)
Give two physical properties of hydrogen gas
Date posted:
September 18, 2017
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Answers (1)
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Dry carbon (II) oxide gas was passed over heated lead (II) oxide.
(a) Write an equation for the reaction
(b) Give one industrial application of the above...
(Solved)
Dry carbon (II) oxide gas was passed over heated lead (II) oxide.
(a) Write an equation for the reaction
(b) Give one industrial application of the above reaction.
(c) Name another gas that can be used in the above reaction.
Date posted:
September 18, 2017
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Answers (1)
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Explain the effects of the accumulation of nitrogenous compounds in water masses?
(Solved)
Explain the effects of the accumulation of nitrogenous compounds in water masses?
Date posted:
September 18, 2017
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Answers (1)
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State two conditions that would make the boiling point of water to be higher than 100oC
(Solved)
State two conditions that would make the boiling point of water to be higher than 100oC
Date posted:
September 18, 2017
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Answers (1)
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a)Why is the percentage of carbon(IV)oxide in the atmosphere fairly constant? (b)Calculate the volume of carbon(IV)oxide in 8,000 m3 of air contained in a hall.
(Solved)
a)Why is the percentage of carbon(IV)oxide in the atmosphere fairly constant?
b)Calculate the volume of carbon(IV)oxide in 8,000 m3 of air contained in a
Date posted:
September 18, 2017
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Answers (1)
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Which two elements will react more vigorously with each other between fluorine, neon, sodium, magnesium?
(Solved)
Which two elements will react more vigorously with each other between fluorine, neon, sodium, magnesium?
Date posted:
September 17, 2017
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Answers (1)
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Define the term a mole?
(Solved)
Define the term a mole?
Date posted:
September 16, 2017
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Answers (1)