Chemistry, 13.10.2020 05:01, jaygolden370
A. The trend in the data for trial 2 shows that less fertilizer causes more growth.
B. The trend in the data for trial 3 shows that plants grow taller if given more fertilizer.
C. The data from trial 3 are inconsistent with the data from trials 1 and 2.
D. The data for the average heights of the plants in trials 1 and 2 contain errors.
Answers: 2
Chemistry, 22.06.2019 12:00, sophiaa23
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
Chemistry, 22.06.2019 20:20, carcon2019
Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .
Answers: 3
A. The trend in the data for trial 2 shows that less fertilizer causes more growth.
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