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AlekseyPX
3 years ago
5

compare and contrast the benefits with the potential negative effects of utilizing hydraulic fracturing to produce oil.

Chemistry
1 answer:
aleksandr82 [10.1K]3 years ago
7 0

Answer:

k

Explanation:

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Compare natural selection to evolution. Be sure to justify your response in two or more complete sentences.
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Natural selection is the process in which a weaker, or less advantaged animal loses something to a stronger, more advantaged animal. For example, a frog with a broken leg probably will not get to mate while a healthy  frog will. Evolution is the process of an animal gradually changing over the generations biologically. An example of this is the theory that humans slowly evolved from monkeys, gradually becoming more and more human like.
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In a step-down transformer, which side has more wire loops?
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Ammonia (NH3) is produced in the human body as a waste product during the digestion of protein. How many moles of N2 will be nee
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3 years ago
What is the approximate percent by mass of potassium in KHCO3?
lozanna [386]

Answer:

The mass percent of potassium is 39%

Option C is correct

Explanation:

Step 1: Data given

Atomic mass of K = 39.10 g/mol

Atomic mass of H = 1.01 g/mol

Atomic mass of C = 12.01 g/mol

Atomic mass of O = 16.0 g/mol

Step 2: Calculate molar mass of KHCO3

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Step 3: Calculate mass percent of potassium (K)

%K = (atomic mass of K / molar mass of KHCO3) * 100%

%K = (39.10 / 100.12) * 100%

%K = 39.05 %

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Option C is correct

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