CHEM 120 Unit 1 Quiz (100% Correct Solutions)

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1. Question : (TCO 1) 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 acr... es of land and your yield should be 1,000 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 CAQ will produce 1,000 bushels per acre. Design an experiment to test this hypothesis. Include your control(s) (2 pts) and your experimental design (4 pts). Describe the experimental results that would support your hypothesis. (2 pts) Be specific. Student Answer: Fist I need to identify the question and decide which variety of corn that will produce 1,000 bushels per acre. My hypothesis would be that CAQ will produce 1,000 bushels per acre. My control group would be the variety that I am currently growing ZQB. ZQB which has produced 1,000 bushels per acre for a period of 5 years. To conduct the Experiment I will use 6 acres of land, plant CAQ variety on 3 and TWX variety on the other 3 acres on same day. Procedure: I will water all 10 acres of land at the same time every day. Each section of land will be fertilized land on same day. I will then conduct observations over the next 2 years and document accordingly. Post the second year I will take inventory of each variety of bushels and calculate an average for each acre. ZQBproduced 900 bushels per acre for year 1 ZQB- produced 850 bushels per acre for year 2. This averages to 875 bushels per acre per year. CAQ- produced 900 bushels per acre for year 1 CAQproduced 1400 bushels per acre for year 2. This averages to 1150 bushels per acre per yea.r TWX- produced 650 bushels per acre for year 1 TWX- produced 750 bushels per acre for year 2. The average of both years is 700 bushels per acre per year. Just by looking at the numbers there is a substantial distance between the averages of bushels per acre per year. CAQ averaged 1150 bushels per each acre per year, which exceeded my hypothesis. In comparison to the average of TWX 700 and ZQB 875 bushels per acre per year. Question 2. How many meters are in 9 yards? Show your work [Show More]

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