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1DCBBCBBEDC
11CADECEBBDC
21EEBABDADBE
31AECCACDDDC
41DABABCBBCA
51CBBAABCADE
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1ai)A mixture contains two or more constituents which can easily be seperated by physical methods1aii)magnesium trioxonitrate(v) = Mg(NO3)2molar mass of Mg(NO3)2=(1*24) + 2 (14*1 + 16*3)=24 + 2 (14 + 48)=24 + 28 + 96 = 148g/mol% of nitrogen = 2*24*100/148% of nitrogen = 48*100/148% of nitrogen = 4800/148% of nitrogen = 32.43%1aiii)i)calcium oxide (CaO)ii)calcium choride (CaCl2)1bi)CnH2n+1OH1bii)hydrolysation1biii)i)displacement reactionii)double decomposition reactioniii)decomposition reactioniv)catalytic reactionv)reversible reaction1biv)i)endothermic heat changeii)exothermic heat change1ci)i)methyl orangeii)phenolphthaleiniii)litmus1cii)NH4Cl+Ca(OH)2----->CaCl2+2NH3+2H2O1ciii)it is collected by upward delivery1civ)mass of gas = 1.58*22.4 = 35.392vapour density = 35.392/1relative molecular mass= V . D * 2=35.392*2relative molecular mass= 70.784(6ai)-addition of water to calcium oxide-rusting of iron in moist air(6aii)-Enhanced weathering-Direct air capture-Bio-energy with carbon capture & storage(6aiii)Enhanced weathering equationCaCO3 + CO2 + H2O → Ca2+ + 2HCO3−(6aiv)Because it is an oxidizing agent(6bi)Physical properties of Ethene:-It is neutral to litmus paper-It is slightly less dense than airPhysical properties of Ethanol:-It is readily soluble in water in all proportions-Ethanol is a colourless, volatile liquid with a characteristic taste and smell(6bii)CH3CH2OH-------->CH3COOH(6biii)sp3-hybridized molecule.========================5ai)i)carbon monoxide and hydrogenii)carbon monoxide,carbon dioxide,hydrogen and nitrogen5aii)i)colloids is an intermediate between true solution and a suspensionii)condensation is the process by which water vapour in the air is changed to liquid water5bi)CaC03+2HCl----->CaCl2+H2O+CO25bii)i)it is used in fire extinguishersii)it is used in the manufacturing of mineral wateriii)carbon(iv)oxide is used as a coolant in nuclear reactors5biii)i)Cr2O7^-2=2Cr + C-2*7) = -22Cr - 14 = -22Cr = -2 + 142Cr/2 = 12/2Cr = 6ii)Cr2{SO4}32Cr + 3 (-2*1 + -2*4) = 02Cr + 3 (-2 - 8) = 02Cr + 3 (-10) = 02Cr - 30 = 02Cr/2 = 30/2 Cr = 155ci)vulcanization is a chemical process of converting netural rubber or related polymers into more durable materials through the addition of sulphur or other equivalent curatives or accelerators5cii)Time Taken(t) for 6.35g of copper(ii)tetraoxosulphatesolutionCu^2^+ + 2c ------->CuQ = 2*63.5*95600Q = 12255500Q = 1t12255500/10 = 10*t/10t = 1225550/60 = 204258.35ciii)Latex==================================4ai)electrolytic cell is a cell that consist of a container of electrolyte with two electrodes connected to a suitable direct current supply4aii)i)daniel cellii)Leclanché cell4aiii)i)copperii)tin4aiv)action of dilute acide on zinc4av)Zn+2HCl------>ZnCl+H24bi)i)dinitrogen(i)oxide(N2O)ii)nitrogen(v)oxide(N2O5)iii)nitrogen(iv)oxide(NO2)4bii)charle's law states that the volume of a fixed mass of gas varies directly with the absolute(kelvin)temperature provided the pressure remains constant.4biii)P1 V1 = P2 V2given thatP1 = 900mmHgP2 = 750mmHgV1 = 300cm^3V2 = ?V2 = P1V1/P2V2 = 900*300/750V2 = 270000/750V2 = 360cm^34biv)% composition carbon = 12/(12*6) + (1*6) *100%= 12/72+6 *100= 12/78 * 100% = 1200/78%%composition of carbon = 15.38%4c)TABULATE-THERMOPLASTS-i)it melts when heat is applied to itii)highly recycled-THERMOSETS-i)does not melt when heat is appliedii)cannot be recycled==================================2ai)ionization energy deals with electron loss while electron loss while electron afinity deals with electron gain2aii)i)they are used to dry gasesii)they are used to recover valuable vapours from industrial effluents and refine petroleum2bi)TABULATE-RHOMBIC SULPHUR-i)bright yellow in colourii)it is octohedral in shape-MONOCLINIC SULPHUR-i)amber in colourii)it is needle like in shape2bii)oxygen = 60%sodium = 40%oxygen 60/163.75/1.74 = 2sodium 40/231.74/1.74 = 1the emperical formula is NaO22biii)sodium(iv)oxide2ci)i)x is hydrophobic regionii)y is hydrophilic religion2cii)i)for laundry purposeii)for fuel2ciii)i)the distance of outermost electron from the nucleusii)the size of the positive nuclear chargeiii)the screening effect of inner electrons2civ)period law states that the properties of the elements are a period function of their atomic number2di)n---pentane----->n---butane----->2---methylbutane---2,2---dimethylpropane2dii)i)glucoseii)galactose====================================================================WHEN WE SEE ENOUGH CLICKS IN THE DARK IMAGE ABOVE WE WILL POST THE REST BY SHARP or B4 9AM BUT IF NO CLICKS NO MORE ANSWERS.
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CHEMISTRY OBJ:
1DCBBCBBEDC
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21EEBABDADBE
31AECCACDDDC
41DABABCBBCA
51CBBAABCADE
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1ai)A mixture contains two or more constituents which can easily be seperated by physical methods1aii)magnesium trioxonitrate(v) = Mg(NO3)2molar mass of Mg(NO3)2=(1*24) + 2 (14*1 + 16*3)=24 + 2 (14 + 48)=24 + 28 + 96 = 148g/mol% of nitrogen = 2*24*100/148% of nitrogen = 48*100/148% of nitrogen = 4800/148% of nitrogen = 32.43%1aiii)i)calcium oxide (CaO)ii)calcium choride (CaCl2)1bi)CnH2n+1OH1bii)hydrolysation1biii)i)displacement reactionii)double decomposition reactioniii)decomposition reactioniv)catalytic reactionv)reversible reaction1biv)i)endothermic heat changeii)exothermic heat change1ci)i)methyl orangeii)phenolphthaleiniii)litmus1cii)NH4Cl+Ca(OH)2----->CaCl2+2NH3+2H2O1ciii)it is collected by upward delivery1civ)mass of gas = 1.58*22.4 = 35.392vapour density = 35.392/1relative molecular mass= V . D * 2=35.392*2relative molecular mass= 70.784(6ai)-addition of water to calcium oxide-rusting of iron in moist air(6aii)-Enhanced weathering-Direct air capture-Bio-energy with carbon capture & storage(6aiii)Enhanced weathering equationCaCO3 + CO2 + H2O → Ca2+ + 2HCO3−(6aiv)Because it is an oxidizing agent(6bi)Physical properties of Ethene:-It is neutral to litmus paper-It is slightly less dense than airPhysical properties of Ethanol:-It is readily soluble in water in all proportions-Ethanol is a colourless, volatile liquid with a characteristic taste and smell(6bii)CH3CH2OH-------->CH3COOH(6biii)sp3-hybridized molecule.========================5ai)i)carbon monoxide and hydrogenii)carbon monoxide,carbon dioxide,hydrogen and nitrogen5aii)i)colloids is an intermediate between true solution and a suspensionii)condensation is the process by which water vapour in the air is changed to liquid water5bi)CaC03+2HCl----->CaCl2+H2O+CO25bii)i)it is used in fire extinguishersii)it is used in the manufacturing of mineral wateriii)carbon(iv)oxide is used as a coolant in nuclear reactors5biii)i)Cr2O7^-2=2Cr + C-2*7) = -22Cr - 14 = -22Cr = -2 + 142Cr/2 = 12/2Cr = 6ii)Cr2{SO4}32Cr + 3 (-2*1 + -2*4) = 02Cr + 3 (-2 - 8) = 02Cr + 3 (-10) = 02Cr - 30 = 02Cr/2 = 30/2 Cr = 155ci)vulcanization is a chemical process of converting netural rubber or related polymers into more durable materials through the addition of sulphur or other equivalent curatives or accelerators5cii)Time Taken(t) for 6.35g of copper(ii)tetraoxosulphatesolutionCu^2^+ + 2c ------->CuQ = 2*63.5*95600Q = 12255500Q = 1t12255500/10 = 10*t/10t = 1225550/60 = 204258.35ciii)Latex==================================4ai)electrolytic cell is a cell that consist of a container of electrolyte with two electrodes connected to a suitable direct current supply4aii)i)daniel cellii)Leclanché cell4aiii)i)copperii)tin4aiv)action of dilute acide on zinc4av)Zn+2HCl------>ZnCl+H24bi)i)dinitrogen(i)oxide(N2O)ii)nitrogen(v)oxide(N2O5)iii)nitrogen(iv)oxide(NO2)4bii)charle's law states that the volume of a fixed mass of gas varies directly with the absolute(kelvin)temperature provided the pressure remains constant.4biii)P1 V1 = P2 V2given thatP1 = 900mmHgP2 = 750mmHgV1 = 300cm^3V2 = ?V2 = P1V1/P2V2 = 900*300/750V2 = 270000/750V2 = 360cm^34biv)% composition carbon = 12/(12*6) + (1*6) *100%= 12/72+6 *100= 12/78 * 100% = 1200/78%%composition of carbon = 15.38%4c)TABULATE-THERMOPLASTS-i)it melts when heat is applied to itii)highly recycled-THERMOSETS-i)does not melt when heat is appliedii)cannot be recycled==================================2ai)ionization energy deals with electron loss while electron loss while electron afinity deals with electron gain2aii)i)they are used to dry gasesii)they are used to recover valuable vapours from industrial effluents and refine petroleum2bi)TABULATE-RHOMBIC SULPHUR-i)bright yellow in colourii)it is octohedral in shape-MONOCLINIC SULPHUR-i)amber in colourii)it is needle like in shape2bii)oxygen = 60%sodium = 40%oxygen 60/163.75/1.74 = 2sodium 40/231.74/1.74 = 1the emperical formula is NaO22biii)sodium(iv)oxide2ci)i)x is hydrophobic regionii)y is hydrophilic religion2cii)i)for laundry purposeii)for fuel2ciii)i)the distance of outermost electron from the nucleusii)the size of the positive nuclear chargeiii)the screening effect of inner electrons2civ)period law states that the properties of the elements are a period function of their atomic number2di)n---pentane----->n---butane----->2---methylbutane---2,2---dimethylpropane2dii)i)glucoseii)galactose====================================================================WHEN WE SEE ENOUGH CLICKS IN THE DARK IMAGE ABOVE WE WILL POST THE REST BY SHARP or B4 9AM BUT IF NO CLICKS NO MORE ANSWERS.
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