GCSE/IGCSE/AS Chemistry Online Calculation
Questions Quiz 4. Percentage composition by mass in a compound
Given the atomic masses: Cu = 64, S = 32 and O = 16; calculate the % by mass of copper in copper(II) sulphate, CuSO_{4} [pbm1]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of carbon in ethane, C_{2}H_{6} [pbm2]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of carbon in octane, C_{8}H_{18} [pbm3]
Given the atomic masses: H = 1, N = 14 and O = 16; calculate the % by mass of hydrogen in nitric acid, HNO_{3} [pbm4]
Given the atomic masses: H = 1, N = 14 and O = 16; calculate the % by mass of hydrogen in ammonium nitrate, NH_{4}NO_{3} [pbm5]
Given the atomic masses: H = 1, N = 14, O = 16 and S = 32; calculate the % by mass of nitrogen in ammonium sulphate, (NH_{4})_{2}SO_{4} [pbm6]
Given the atomic masses: H = 1, O = 16 and S = 32; calculate the % by mass of hydrogen in sulphuric acid, H_{2}SO_{4} [pbm7]
Given the atomic masses: O = 16, Al = 27 and S = 32; calculate the % by mass of aluminium in aluminium sulphate, Al_{2}(SO_{4})_{3} [pbm8]
Given the atomic masses: H = 1 and Cl = 35.5, calculate the % by mass of hydrogen in hydrogen chloride, HCl [pbm9]
Given the atomic masses: Na = 23 and Cl = 35.5, calculate the % by mass of sodium in sodium chloride, NaCl [pbm10]
Given the atomic masses: Ca = 40 and Cl = 35.5, calculate the % by mass of calcium in calcium chloride, CaCl_{2} [pbm11]
Given the atomic masses: H = 1, O = 16 and Mg = 24, calculate the % by mass of magnesium in magnesium hydroxide, Mg(OH)_{2} [pbm12]
Given the atomic masses: Al = 27 and Cl = 35.5, calculate the % by mass of aluminium in aluminium chloride, AlCl_{3} [pbm13]
Given the atomic masses: H = 1, O = 16 and Al = 27, calculate the % by mass of aluminium in aluminium hydroxide, Al(OH)_{3} [pbm14]
Given the atomic masses: H = 1, C = 12 and O = 16; calculate the % by mass of carbon in glucose, C_{6}H_{12}O_{6} [pbm15]
Given the atomic masses: H = 1, C = 12 and O = 16; calculate the % by mass of carbon in ethanol ('alcohol'), C_{2}H_{5}OH [pbm16]
Given the atomic masses: O = 16 and Fe = 56; calculate the % by mass of iron in iron(II) oxide, FeO [pbm17]
Given the atomic masses: O = 16 and Fe = 56; calculate the % by mass of oxygen in iron(II) oxide, FeO [pbm18]
Given the atomic masses: O = 16 and Fe = 56; calculate the % by mass of iron in iron(III) oxide, Fe_{2}O_{3} [pbm19]
Given the atomic masses: O = 16 and Fe = 56; calculate the % by mass of iron in the iron oxide, Fe_{3}O_{4} [pbm20]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of carbon in methane, CH_{4} [pbm21]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of carbon in propane, C_{3}H_{8} [pbm22]
Given the atomic masses: C = 12 and O = 16; calculate the % by mass of oxygen in carbon dioxide, CO_{2} [pbm23]
Given the atomic masses: C = 12, O = 16 and Cu = 64; calculate % by mass of copper in copper carbonate, CuCO_{3} [pbm24]
Given the atomic masses: C = 12, O = 16 and Ca = 40; calculate the % by mass of calcium in calcium carbonate, CaCO_{3} [pbm25]
Given the atomic masses: Cu = 64, S = 32 and O = 16; calculate the % by mass of oxygen in copper(II) sulphate, CuSO_{4} [pbm26]
Given the atomic masses: Cu = 64, S = 32 and O = 16; calculate the % by mass of sulphur in copper(II) sulphate, CuSO_{4} [pbm27]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of hydrogen in ethane, C_{2}H_{6} [pbm28]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of hydrogen in octane, C_{8}H_{18} [pbm29]
Given the atomic masses: H = 1, N = 14 and O = 16; calculate the % by mass of oxygen in nitric acid, HNO_{3} [pbm30]
Given the atomic masses: H = 1, N = 14 and O = 16; calculate the % by mass of nitrogen in nitric acid, HNO_{3} [pbm31]
Given the atomic masses: H = 1, N = 14 and O = 16; calculate the % by mass of nitrogen in ammonium nitrate, NH_{4}NO_{3} [pbm32]
Given the atomic masses: H = 1, N = 14 and O = 16; calculate the % by mass of oxygen in ammonium nitrate, NH_{4}NO_{3} [pbm33]
Given the atomic masses: H = 1, N = 14, O = 16 and S = 32; calculate the % by mass of hydrogen in ammonium sulphate, (NH_{4})_{2}SO_{4} [pbm34]
Given the atomic masses: H = 1, N = 14, O = 16 and S = 32; calculate the % by mass of sulphur in ammonium sulphate, (NH_{4})_{2}SO_{4} [pbm35]
Given the atomic masses: H = 1, N = 14, O = 16 and S = 32; calculate the % by mass of oxygen in ammonium sulphate, (NH_{4})_{2}SO_{4} [pbm36]
Given the atomic masses: H = 1, O = 16 and S = 32; calculate the % by mass of oxygen in sulphuric acid, H_{2}SO_{4} [pbm37]
Given the atomic masses: O = 16, Al = 27 and S = 32; calculate the % by mass of sulphur in aluminium sulphate, Al_{2}(SO_{4})_{3} [pbm38]
Given the atomic masses: O = 16, Al = 27 and S = 32; calculate the % by mass of oxygen in aluminium sulphate, Al_{2}(SO_{4})_{3} [pbm39]
Given the atomic masses: H = 1 and Cl = 35.5, calculate the % by mass of chlorine in hydrogen chloride, HCl [pbm40]
Given the atomic masses: Na = 23 and Cl = 35.5, calculate the % by mass of chlorine in sodium chloride, NaCl [pbm41]
Given the atomic masses: Ca = 40 and Cl = 35.5, calculate the % by mass of chlorine in calcium chloride, CaCl_{2} [pbm42]
Given the atomic masses: H = 1, O = 16 and Mg = 24, calculate the % by mass of oxygen in magnesium hydroxide, Mg(OH)_{2} [pbm43]
Given the atomic masses: Al = 27 and Cl = 35.5, calculate the % by mass of chlorine in aluminium chloride, AlCl_{3} [pbm44]
Given the atomic masses: H = 1, C = 12 and O = 16; calculate the % by mass of hydrogen in glucose, C_{6}H_{12}O_{6} [pbm45]
Given the atomic masses: H = 1, C = 12 and O = 16; calculate the % by mass of oxygen in glucose, C_{6}H_{12}O_{6} [pbm46]
Given the atomic masses: H = 1, C = 12 and O = 16; calculate the % by mass of hydrogen in ethanol ('alcohol'), C_{2}H_{5}OH [pbm47]
Given the atomic masses: H = 1, C = 12 and O = 16; calculate the % by mass of oxygen in ethanol ('alcohol'), C_{2}H_{5}OH [pbm48]
Given the atomic masses: O = 16 and Fe = 56; calculate the % by mass of oxygen in iron(III) oxide, Fe_{2}O_{3} [pbm49]
Given the atomic masses: H = 1 and C = 12; calculate the % by mass of hydrogen in methane, CH_{4} [pbm50]
Given the atomic masses: O = 16 and Fe = 56; calculate the % by mass of oxygen in the iron oxide, Fe_{3}O_{4} [pbm51]
Given the atomic masses: C = 12, O = 16 and Ca = 40; calculate the % by mass of carbon in calcium carbonate, CaCO_{3} [pbm52]
Given the atomic masses: C = 12, O = 16 and Ca = 40; calculate the % by mass of oxygen in calcium carbonate, CaCO_{3} [pbm53]
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