How many moles of iron are there in 2.8g? (atomic mass Fe = 56) [mam-1] How many moles of sulphur are there in 64g? (atomic mass S = 32) [mam-2] How many moles of sodium are there in 115g? (atomic mass Na = 23) [mam-3] How many moles of carbon are there in 3g? (atomic mass C = 12 ) [mam-4] How many moles of zinc are there in 1.625g? (atomic mass Zn = 65) [mam-5] How many moles of iodine are there in 12.7g of I2? (atomic mass I = 127) [mam-6] How many moles of chlorine are there in 213g of Cl2? (atomic mass Cl = 35.5) [mam-7] How many moles of bromine are there in 6.4g of Br2? (atomic mass Br = 80) [mam-8] How many moles of phosphorus are there in 24.8g of P4? (atomic mass P = 31) [mam-9] How many moles of oxygen are there in 128g of O2? (atomic mass O = 16) [mam-10] How many moles of water are there in 4.5g of H2O? (atomic masses: H = 1, O = 16) [mam-11] How many moles of methane are there in 112g of CH4? (atomic masses: C = 12, H = 1) [mam-12] How many moles of sodium sulphate are there in 7.1g of Na2SO4? (atomic masses: Na = 23, S = 32, O = 16) [mam-13] How many moles of sulphuric acid are there in 2.45g of H2SO4? (atomic masses: H = 1, S = 32, O = 16) [mam-14] How many moles of calcium hydroxide are there in 25.9g of Ca(OH)2? (atomic masses: Ca = 40, O = 16, H = 1) [mam-15] How many g are there in 1.5 moles of aluminium? (atomic mass Al = 27) [mam-16] How many g are there in 0.02 moles of uranium? (atomic mass U = 238) [mam-17] How many g are there in 0.65 moles of magnesium? (atomic mass Mg = 24) [mam-18] How many g are there in 0.23 moles of silicon? (atomic mass Si = 28) [mam-19] How many g are there in 7.3 moles of boron? (atomic mass B = 10.8) [mam-20] How many g are there in 0.05 moles of nitrogen, N 2? (atomic mass N = 14) [mam-21] How many g are there in 0.75 moles of ozone, O3? (atomic mass O = 16) [mam-22] How many g are there in 2.5 moles of oxygen, O2? (atomic mass O = 16) [mam-23] How many g are there in 0.16 moles of chlorine, Cl2? (atomic mass Cl = 35.5) [mam-24] How many g are there in 1.65 moles of iodine, I2? (atomic mass I = 127) [mam-25] How many g are there in 3.6 moles of sodium hydroxide, NaOH? (atomic masses: Na = 23, O = 16, H = 1) [mam-26] How many g are there in 1.5 moles of nitric acid, HNO3? (atomic masses: H = 1, N = 14, O = 16) [mam-27] How many g are there in 0.15 moles of ammonium sulphate, (NH4)2SO4? (atomic masses: N = 14, H = 1, S = 32, O = 16) [mam-28] How many g are there in 0.8 moles of aluminium hydroxide, Al(OH)3? (atomic masses: Al = 27, O = 16, H = 1) [mam-29] How many g are there in 0.005 moles of sodium thiosulphate, Na2S2O3? (atomic masses: Na = 23, S = 32, O =16) [mam-30] It was found that 0.2 moles of atoms of an element had a mass of 3.2g. What is the relative atomic mass of the element? [mam-31] It was found that 0.005 moles of atoms of an element had a mass of 0.295g. What is the relative atomic mass of the element? [mam-32] It was found that 0.15 moles of atoms of an element had a mass of 10.95g. What is the relative atomic mass of the element? [mam-33] It was found that 0.4 moles of atoms of an element had a mass of 56.2g. What is the relative atomic mass of the element? [mam-34] It was found that 0.015 moles of atoms of an element had a mass of 2.88g. What is the relative atomic mass of the element? [mam-35] It was found that 0.25 moles of atoms of an element had a mass of 40.65g. What is the relative atomic mass of the element? [mam-36] It was found that 0.002 moles of a compound had a mass of 0.24g. What is the relative formula mass of the compound? [mam-37] It was found that 0.005 moles of a compound had a mass of 0.2025g. What is the relative formula mass of the compound? [mam-38] It was found that 0.25 moles of a compound had a mass of 14.05g. What is the relative formula mass of the compound? [mam-39] It was found that 0.025 moles of a compound had a mass of 0.70g. What is the relative formula mass of the compound? [mam-40]