1.Identify and calculate the number of representative particles in each of the following quantities. a. 2.15 moles of gold to atoms

b. 0.151 mole of nitrogen oxide to molecules

2. Calculate the number of moles of the substance that contains the following number of representative particles.

a. 8.92´1023 atoms of barium

b. 5.50´1025 molecules of carbon monoxide

3. Determine the mass in grams of each of the following quantities.

a. 1.24 moles of beryllium

b. 3.35 moles of calcium

4. Calculate the number of moles in each of the following quantities.

a. 6.35 g lithium

b. 346 g zinc

5. How many atoms are in the following samples?

a. 1.24 g cobalt

b. 0.575 g cesium

6.What is the empirical formula for a compound that is 6.63% aluminum and 93.37% iodine?