homework4

homework4 - chloride and hydrogen a Write and balance the...

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Homework #4 Name ______________________ Chem 30A Dr. Harrison 1. (10 pts) An interesting natural product was isolated from an Indonesian ( Haliclona sp.) sponge called haliclotriol A. Consider that this triterpene has a molecular formula of C 36 H 58 O 6 to answer the following questions. a) What is the weight, in amu, of one molecule of haliclotriol A? b) What is the molar mass of haliclotriol A? c) How many moles are there in 123.4 mg of haliclotriol A? d) How many molecules of haliclotriol A are there in 123.4 mg? e) How many oxygen atoms are in 2.34 g of haliclotriol A?
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2. ( 4 pts) Solid aluminum reacts with hydrochloric acid (HCl) to produce aluminum
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Unformatted text preview: chloride and hydrogen. a) Write and balance the reaction for this process. b) If you start with 4.5 grams of aluminum, how many grams of hydrogen is produced? c) How many grams of hydrochloric acid are needed to produce 5.42 g of aluminum chloride? 3. ( 6 pts) Write and balance the following equations. a) Zinc sulfide reacts with oxygen to form zinc oxide and sulfur dioxide. b) Ammonium reacts with oxygen to form nitrogen monoxide and water. c) Magnesium reacts with nitrogen to form magnesium nitride....
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homework4 - chloride and hydrogen a Write and balance the...

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