Recent questions without a selected answer

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1 answer

Study the set up below and answer the questions that follow

asked Jul 7, 2021 in Chemistry Form 1 by anony mous

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1 answer

An air bubble with a volume of 1 cm3 escapes from the helmet of a diver at a depth of 200 m below the water surface. What will be the volume of the bubble immediately it breaks the surface of water? (Take atmospheric pressure = 10 m of water)

asked Jul 7, 2021 in Physics Form 1 by anonymous

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2 answers

State the principle of moments

asked Jul 7, 2021 in Physics Form 2 by anonymous

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1 answer

A railway truck of mass 4000 kg moving at 3 m/s collides with a stationary truck of mass 2000 kg. The couplings join and the trucks move off together. Calculate their common velocity after collision.

asked Jul 7, 2021 in Physics Form 3 by anonymous

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1 answer

Give a reason why heat transfer by radiation is faster than heat transfer by conduction

asked Jul 7, 2021 in Physics Form 1 by anonymous

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1 answer

State the SI unit of density

asked Jul 7, 2021 in Physics Form 1 by anonymous

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1 answer

Calculate the temperature change of water as it falls through a height of 20 m. (Take g = 10 N/kg and s.h.c of water =4200 J/kg/K)

asked Jul 7, 2021 in Physics Form 1 by anonymous

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1 answer

When calcium carbonate was added to a solution of dry hydrogen chloride in methyl benzene there was no observable reaction. Explain.

asked Jul 7, 2021 in Chemistry Form 3 by anony mous

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1 answer

The level of water in a burette is at 30 cm3. 400 drops of water each of volume 0.015 cm3 was removed from the burette.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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When a current of 0.5 amperes was passed for 32 minutes and 10 seconds through fused chloride of metal P 0.44 of P was deposited. Determine the charge of the ion of metal P. (IF = 96,500C, P =88)

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

50cm3 of oxygen gas diffused through a porous plug in 80 secs. How long will it take 100cm3 of sulphur (IV) oxide to diffuse through the same plug? (S = 32 0= 16)

asked Jul 7, 2021 in Chemistry Form 3 by anony mous

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1 answer

The structure below represents a segment of a polymer. Use it to answer the questions that follow.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

Identify the following cleansing agents

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

A gaseous compound consists of 86% carbon and 14% hydrogen by mass. At s.t.p, 3.2dm3 of the compound has a mass of 6g. (C = 12 H = 1 molar gas volume at s.t.p = 22.4dm3)

asked Jul 7, 2021 in Chemistry Form 3 by anony mous

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1 answer

Using dots (•) and crosses (x) show bonding in; (C = 2, 0 = 16, H = 1)

asked Jul 7, 2021 in Chemistry Form 2 by anony mous

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1 answer

The table below shows the pH values of solution J to N

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

Study the experimental set up of apparatus shown below.

asked Jul 7, 2021 in Chemistry Form 2 by anony mous

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1 answer

A white solid L changes to yellow solid R when strongly heated but on cooling becomes white again. When L is reacted with dilute nitric(v) acid effervescence occurs.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

The standard reduction potentials of two half cells are

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

Nitrogen reacts with oxygen according to the equation.

asked Jul 7, 2021 in Chemistry Form 3 by anony mous

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