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melisa1 [442]
3 years ago
15

(Please help ASAP I will mark brainliest!! (: )Which of the following describes what happens when a cell uses energy to transpor

t something across the cell membrane?
1.osmosis
2.diffusion
3.passive transport
4.active transport
Chemistry
2 answers:
Andreas93 [3]3 years ago
4 0

4. is the answer, or not dont take my word for it.

mr Goodwill [35]3 years ago
3 0

Answer: 4. Active Transport

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Lorelai discovers a compound that is 64.8 g C, 13.62 g H, and 21.58 g O. What is the empirical formula of Lorelai's compound
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The empirical formula of Lorelai's compound is C₄H₁₀O

<h3>Data obtained from the question</h3>
  • C = 64.8 g
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<h3>How to determine the empirical formula</h3>

Divide by their molar mass

C = 64.8 / 12 = 5.4

H = 13.62 / 1 = 13.62

O = 21.58 / 16 = 1.35

Divide by the smallest

C = 5.4 / 1.35 = 4

H = 13.62 / 1.35 = 10

O = 1.35 / 1.35 = 1

Thus, the empirical formula of the compound is C₄H₁₀O

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2 years ago
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Answer:

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When considering free energy change, biochemists usually define a standard state, the biochemical standard state, which is modif
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