Sam wished to investigate how fertilizer run-off affects the growth of algae in
freshwater lakes and streams. He set his experiment up in this way. He placed
900 ml of water into each of five 1000 ml glass beakers. To each beaker he
added 5 ml of water from an aquarium which contained a large concentration of
algae. The beakers were placed under a grow light which was timed to provide 12
hours of light each day. Liquid fertilizer was added to the beakers in the following
amounts: Beaker A - 8 ml fertilizer, Beaker B - 6 ml fertilizer, Beaker C - 4 ml
fertilizer, Beaker D - 2 ml fertilizer, and Beaker E - no fertilizer. Each week a
random sample from each of the beakers was examined under a microscope to
get a count of the number of algal cells present. Which of the following is the
control group for this experiment?
Answers: 2
Chemistry, 22.06.2019 04:30
How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?
Answers: 1
Chemistry, 22.06.2019 05:50
What are transitions between a liquid and gas called? identify which way they are transitioning
Answers: 2
Chemistry, 22.06.2019 08:30
Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.
Answers: 3
Chemistry, 22.06.2019 15:30
Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.
Answers: 1
Sam wished to investigate how fertilizer run-off affects the growth of algae in
freshwater lakes an...
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