Chemistry, 19.03.2020 00:41, stonerofmisery676
Elijah wanted to learn more about the growth pattern of bacteria, so he performed the following experiment.
Elijah placed four bacterial colonies in a petri dish filled with nutrient broth. Then, he incubated the dish at 37°C. He planned to make systematic observations by measuring the number of colonies every twenty minutes. The diagram below shows how the dish looked at each twenty minute interval.
Which of the following tables correctly records Elijah's observations?
A.
Total Elapsed Time
(minutes) Number of
Bacterial Colonies
0 4
20 4
40 8
60 16
B.
Total Elapsed Time
(minutes) Number of
Bacterial Colonies
0 4
20 4
20 8
20 16
C.
Total Elapsed Time
(minutes) Number of
Bacterial Colonies
0 4
20 8
20 16
20 32
D.
Total Elapsed Time
(minutes) Number of
Bacterial Colonies
0 4
20 8
40 16
60 32
Answers: 1
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Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3
Answers: 3
Chemistry, 22.06.2019 11:00, daniel1480
Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced. be sure your answer has the correct number of significant digits.
Answers: 2
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Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution
Answers: 2
Elijah wanted to learn more about the growth pattern of bacteria, so he performed the following expe...
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