Chemistry, 16.10.2020 19:01 connorvoss7345
NEED HELP ASAPPP!!
Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops.
A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer.
Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question.
PART A-
What are the student’s observations and inferences before he starts his investigation?
PART B-
What’s the student’s scientific question?
PART C-
Construct at least two possible hypotheses for the student’s experiment.
PART D-
Choose one of the hypotheses to make a prediction.
PART E-
How would you conduct your investigation? In your answer, explain your independent and dependent variables.
PART F-
How does the design of your experiment control for outside factors that may affect the results?
PART G-
How do you plan to analyze and communicate your results?
Answers: 2
Chemistry, 22.06.2019 17:10
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
Chemistry, 22.06.2019 19:30
What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm
Answers: 3
NEED HELP ASAPPP!!
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