CHEM-111 Study Guide - Relative Atomic Mass, Molar Mass, Nitrogen Dioxide
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S 4 chemistry / revision exercise / mole concept / 03-04 / p. 1. Find the number of moles of ions in (a) 2 moles of fe2(so4) 3. From the formula, we know that 1 mole of fe2(so4) 3 contains 2 moles of fe3+ ions and 3 moles of so4. Total no. of moles of ions (b) 0. 2 moles of al(no3) 3. Total no. of moles of ions: given 1. 6 g of methane (ch4), find. 3 = 0. 6 (a) number of moles of ch4. = 12 + 1 4 = 16 gmol- 1. = mass of ch4 /molar mass of ch4. No. of molecules of ch4 = no. of moles avogadro number (c) number of h atoms. Find the mass of (a) 1 h2o molecule. S 4 chemistry / revision exercise / mole concept / 03-04 / p. 2. 1023 (relative atomic masses: o = 16. 0, k = 39. 0: calculate the number of moles of atoms in (a) 127 g of copper.
