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Unformatted text preview: Be sure to include all labels. 6. If 20.0 moles of hydrogen gas (H 2 ) react in a given experiment, how many grams of hydrogen does this represent? 7. How many grams in each of the following? a) 35.0 moles of oxygen molecules (O 2 ) b) 400 moles of sulfuric acid (H 2 SO 4 ) c) 5.0 moles of water molecules (H 2 O) d) 30.0 moles of phosphoric acid (H 3 PO 4 ) e) 100 moles of nitric acid (HNO 3 ) 8. A chemist weighs out 100.0 grams of chlorine gas (Cl 2 ) and 10.00 grams of sulfur dichloride (SCl 2 ) How many moles of each substance does she have? 9. How many moles of atoms are there in 50.0 grams of aluminum? In 0.85 grams of iron? (NOTE: Metals exist in the atomic state, rather than as molecule....
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