Chem 120 week 3 quiz - Study guides, Class notes & Summaries

CHEM 120 WEEK 3 QUIZ Chamberlain College

Question : (TCO 5) What coefficient is placed in front of O2 to complete the balancing of the following equation? C5H8 ? O2 –> 5 CO2 4 H2O Question : (TCO 5) Magnesium reacts with oxygen to form magnesium oxide and has the following balanced chemical equation: 2 Mg O2 –> 2 MgO. How many mole( s) of oxygen gas (O2) are needed to react with 4.0 moles of Mg? Question : (TCO 5) Determine the # of atoms for each element present in the following molecule: Mg(OH)2 (3 pts.). Using the periodic...

Question: You have been growing the same variety of corn for over 5 years. In the past two years, you have noticed that the yield has decreased by 10% each year. You grow corn on 10 acres of land and your yield should be 1000 bushels per acre. Growing conditions have been consistent for the past 5 years. You want to identify another variety of corn that will produce 1,000 bushels per acre. You currently grow Variety ZQB. You want to test two new varieties, CAQ and TWX. You hypothesize that an ex...