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Compound V reacts with water as shown in the following equation. V+H2O → CH3CH2CH2OH

asked Jun 22, 2021 in Chemistry Form 2 by anony mous

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6.2g of phosphorus was reacted with excess oxygen to form phosphorus( V) oxide. Determine the mass of the oxide formed. (0 = 16.0; P 31.0)

asked Jun 22, 2021 in Chemistry Form 3 by anony mous

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Outline the differences between Quran and Hadith Qudsi

asked Jun 21, 2021 in IRE Form 3 by Mohammed hamoud

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Use the information in the Table to answer the questions that follow.

asked Jun 21, 2021 in Chemistry Form 3 by anony mous

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In a certain factory, iron is extracted from the haematite ore using the blast furnace as shown in Figure 1. The other raw materials are coke, limestone and air. The melting and boiling points of iron are 1535°C and 3000 °C, respectively.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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One of the ores of iron is haematite, Fe2O3. Give the name and formula of two other ores of iron.

asked Jun 21, 2021 in Chemistry Form 4 by anonymous

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Some compounds such as CFCs and DDT are regarded as environmental pollutants. Give the complete names of

asked Jun 21, 2021 in Chemistry Form 3 by anony mous

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A factory uses 100 kg of ammonia each day to produce 160 kg of nitrogen(II) oxide. Calculate the percentage yield of nitrogen(II) oxide.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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Methane reacts with bromine as shown in the following equation. CH4(g) + Br2(g) → CH3Br(g) + HBr(g) Using the bond energies in the Table, calculate the enthalpy change, ΔH for the reaction.

asked Jun 21, 2021 in Chemistry Form 4 by anony mous

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One of the reactions in the manufacture of nitric(V) acid involves catalytic oxidation of ammonia as shown in the equation.

asked Jun 21, 2021 in Chemistry Form 4 by anonymous

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Dichromate(VI) ions are orange in colour while chromate(VI) ions are yellow. Consider the following equilibrium.

asked Jun 21, 2021 in Chemistry Form 4 by anonymous

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State what is meant by the term 'dynamic equilibrium.

asked Jun 21, 2021 in Chemistry Form 1 by anonymous

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peroxide decomposition Sodium carbonate is prepared on large scale by the Solvay process. The equation for the main reaction that takes place in the carbonator is: NaCl(aq) + NH3(g) + CO2(g)+ H2O(l) → NH4Cl(aq) + NaHCO3(s)

asked Jun 21, 2021 in Chemistry Form 2 by anony mous

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In the laboratory, methane can be prepared from salts of alkanoic acids. Describe how methane is prepared from sodium ethanoate.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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The main component in natural gas is methane. Describe how methane in natural gas is formed.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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Incomplete combustion of pentane may result in air pollution. Write an equation to illustrate this combustion.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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The Figure shows an energy level diagram for the decomposition of hydrogen peroxide using a catalyst

asked Jun 21, 2021 in Chemistry Form 4 by anony mous

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Draw and name two isomers of pentane

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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Crude oil is a mixture of hydrocarbons which are separated by fractional distillation. One of the components obtained contains an alkane A, with eleven carbon atoms.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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Nitrogen(IV) oxide is prepared by heating lead(ll) nitrate.

asked Jun 21, 2021 in Chemistry Form 3 by anony mous

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