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Is another day to keep your head up and keep grinding
My people how una de?
Hi guys
How many moles HCL will be required to react with potassium heptaoxodichromate (VI) to produce 3 moles of chlorine?
A. 14
B. 12
C. 11
D. 10
2000
90
50 cm3 of carbon (II) oxide was exploded with 150 cm3 of air containing 20% oxygen by volume. Which of the reactants was in excess?
A. Carbon (II) oxide
B. Carbon (IV) oxide
C. Oxygen
D. Nitrogen
Which of the following compounds is composed of Al, Si, O and H?
A. Epsom salt
B. Limestone
C. Clay
D. Urea
Sieving is a technique used to separate mixture containing solid particles of
A. small sizes
B. large sizes
C. differents sizes
D. the same sizes
A mixture of iodine and sulphur crystals can be separated by treatment with?
A. Water to filter off sulphur
B. carbon (IV) sulphide to filter off iodine
C. ethanoic acid to filter off sulphur
D. methanol to filter off iodine
When the two end alkyl groups ethyl ethanoate are interchange, the compound formed is known as
A. methyl ethanoate
B. ethyl propanaote
C. methyl propanoate
D. propyl ethanoate
Chidi Ezinne
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Chidi Ezinne
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