Ineed chemistry (connections unit 6 lesson 3) 1. a sample of gold (au) has a mass of 35.12 g. a. calculate the number of moles of gold (au) in the sample and record in table 1. show your work. b. calculate the number of atoms of gold (au) in the sample and record in table 1. show your work. 2. a sample of table sugar (sucrose, c12h22o11) has a mass of 1.202 g. a. calculate the number of moles of c12h22o11 contained in the sample and record in table 1. show your work.

1) Number of moles = mass of Au/ molar mass of Au
 Mass = 35.12g and molar mass = 196.699.
  Number of moles = 35.12/196.699 = 0.178

 2) The number of atoms or molecules in one mole of a substance, equal to 6.023 * 10^23.
 Hence it follows there are 6.0233 * 10^23 * 0.178 = 1.0702 * 10^23 atoms. 3) Number of moles of sucrose = mass/molar mass.
  Molar mass of C12H22O11 = (12*2) + (1*22) + (16 * 11) = 24 + 22 + 176 = 222
 Number of moles = 1.202/222 = 0.0054

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Explanation: