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CHEM 120 Unit 1 Quiz(Download To Score An A )

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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 experiment to test this hypothesis, include your control(s) and your experiment design. Describe the experimental results that would support your results. Question: How many liters are in 0.75 gallons? Question: How many milligrams are in 5 ounces? Question: How many milliliters are in 2.7 quarts? Question: What is the mass of 50.0 mL of an intravenous glucose solution with a density of 1.15 g/mL? Question: What is the mass of 20mL of methanol, which has a density of 0.792g/mL? Question: Determine the number of protons, neutrons and electron for the element Calcium. The mass number for the isotope of this element is 42. Question: Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of the element is. Question: Heptane is always composed of 84% carbon and 16% hydrogen. This illustrates the law of _______ . Question: Which subatomic particles have approximately the same mass? Question: Which type of radioactivity has a negative charge? Question: Which type of radioactivity has a positive charge? Question: The proton has a larger mass ________ . Question: A neutral atom has the same number of _______ [Show More]

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