Recent questions in Chemistry Form 3

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A white solid dissolve in water to form a colourless solution. The colourless solution forms a white precipitate with Ammonia solution but dissolve in excess alkali. The colourless solution forms a white precipitate with Lead (II) Nitrate solution. The white Precipitate dissolve on warming to form a colourless solution.

asked Aug 17, 2021 in Chemistry Form 3 by anonymous

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Name the compound below

asked Aug 17, 2021 in Chemistry Form 3 by anonymous

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A solution contains 29.1g per litre of aluminium Sulphate. Calculate the number of Sulphate ions in 350cm3 of the solution.(Al = 27, S = 32, O = 16) Avogadro’s constant = 6.0 x 1023.

asked Aug 17, 2021 in Chemistry Form 3 by anonymous

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what happens oxygen is mixed with hydrogen

asked Aug 16, 2021 in Chemistry Form 3 by realpalmer

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When Chlorine gas was bubbled through water the resulting solution act as a bleaching agent

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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When potassium Nitrate is heated, it produces potassium Nitrate and gas X

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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2 answers

State Boyle’s Law

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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A certain mass of gas occupies 0.15dm3 at 20°c and 98,648.5pa, Calculate it volume at 101325pa and 0°c

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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In a experiment to determine the percentage of purity of a sample of sodium carbonate, 2.15g of the sample reacted completely with 40cm3 of 0.5m sulphuric (iv) acid

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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60cm3 of oxygen diffuses through a porous pot in 50 seconds. How long would it take 60cm3 of oxygen gas diffuses through a porous pot in 50sec.How long would it take 60cm3 of Sulphur (iv) oxide to diffuse through the same pot under the same conditions?

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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Write balanced equations for the following reactions

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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Write down the formula of the following compounds

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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Determine the number of sodium ions contained in 25cm3 of 0.5M sodium carbonate solution [a=6.023 x 1023]

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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answer to electrical current passing through H2SO4 State and explain the change in mass that occur when following substances are separately heated in open crucibles [4 mks]

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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Write down an ionic equation for the reaction between dilute hydrochloric acid and calcium carbonate

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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An oxide of element F has the formulaF2O5

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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20g of solid sodium hydroxide were dissolved in distilled water and made to 400cm3. 30cm3 of this solution required 27cm3 of dilute sulphuric (iv) acid for complete reaction. [Na=23 O=16 H=1] Determine

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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When 0.288g of an oxide of metal M was reduced using suitable reducing agent, 0.256 of pure metal was formed. Determine the empirical formula of the oxide of the metal M. [M=64 O=16]

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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The reaction between hot concentrated sodium hydroxide and chlorine gas produces sodium chlorate (V) as one of the products

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Study the diagram below and answer the questions that follow:

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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