Recent questions in Chemistry Form 3

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when 100cm cube of gaseous hydrocarbon(cxHy) burn in 400cm cube of oxygen is unused,200cm cube of steam are produced find out the formular of the hydrocarbon

asked Sep 4, 2021 in Chemistry Form 3 by bettyke

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3 answers

How to calculate molarity of a titer

asked Sep 2, 2021 in Chemistry Form 3 by underground

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1 answer

why sodium Na conduct electricity but sugarcane can not conduct electricity. briefly explain

asked Aug 20, 2021 in Chemistry Form 3 by opekipeoki

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1 answer

The diagram below shows the set up used by a student to prepare dry sulphur IV oxide gas. Study it carefully and answer the question that follows.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

Distinguish between the bleaching action of sulphur IV oxide and chlorine.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

The flow charts below shows some reaction starting with zinc nitrate. Study it and answer the question that follows.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

give one industrial use for Nitric acid

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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2 answers

Give one industrial use for Ammonia

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

The scheme below shows various reactions starting with hydrogen and nitrogen .study it carefully and answer the question that follows.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

Why is it advisable to obtain nitrogen from air instead ammonia?

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

In another experiment a gas jar containing ammonia was inverted over a burning splint. What observation would be made?

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

The diagram below shows a set-up that can be used to obtain nitrogen gas in an experiment.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

The diagram below represents the extraction of sulphur by Frasch process

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

Explain how you would show chemically that a given gas is ammonia.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

20cm3 of oxygen diffused through a porous partition in 70s .how long would it take 20cm3. Of sulphur VI oxide to diffuse through the same portion under the same condition.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

The rate of diffusion of neon was found to be 1.45 times faster than that of an equa! volume of gas X at room temperature. Determine the relative formula mass of gas X (Ne = 20.0).

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

A compound W consist of 26.7%carbon, 2.2% hydrogen and the rest oxygen. It has a relative formula Mass of 90(C=12, H=1, O=16,)

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

A fixed mass of a gas has a volume of 200cm3 at a temperature of 47°C and 750mmHg. Calculate the volume the gas would occupy at 7°C and 750mmHg pressure.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

Name the two allotropes of sulphur.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

Use the following information to answer the questions that follow:

asked Aug 17, 2021 in Chemistry Form 3 by anonymous

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