Chemistry, 05.02.2021 20:20 jaureguilol1
Investigation: Cells come from existing cells.
Observe the two flasks, and record information about their appearance.
Day
Flask with open (broken) neck
Flask with intact neck
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Investigation: Cells are the basic unit of life.
Day
Petri dish (on left) containing agar plus nutrients
Petri dish (on right) containing agar without nutrients
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Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
How did scientists discover that all living things are made of cells?
How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonliving things like water and air?
Why are nutrients needed for living things? Describe the difference between living and nonliving things.
Answers: 2
Chemistry, 22.06.2019 17:30
Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?
Answers: 2
Chemistry, 22.06.2019 20:20
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
Investigation: Cells come from existing cells.
Observe the two flasks, and record information about...
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