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Eva8 [605]
2 years ago
14

What is the answer to “An element is:”

Chemistry
2 answers:
Jobisdone [24]2 years ago
8 0
A. A pure chemical substance consisting of one type of atom
arlik [135]2 years ago
3 0

Answer:

Option A

A pure chemical substance consisting of one type of atom.

Explanation: An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.

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6b<br> Which of the following is a starting compound during<br> cellular respiration?
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Answer: Oxygen and glucose.

Explanation:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.Jun 1, 2020

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Which of these statements is true about heat. 1. Heat always flows from cooler to warmer substances. 2. Heat doesn’t flow betwee
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What keeps the planets in orbit in our solar system
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Gravitational pull coming from the sun
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What is the expected value for the heat of sublimation of acetic acid if its heat of fusion is 10.8 kJ/mol and its heat of vapor
Dennis_Churaev [7]

Answer:

35.1 kJ/mol is the expected value for the heat of sublimation of acetic acid.

Explanation:

CH_3COOH(l)\rightarrow CH_3COOH(g)..[1]

Heat of vaporization of acetic acid = H^o_{vap}=24.3 kJ/mol

CH_3COOH(s)\rightarrow CH_3COOH(l)..[2]

Heat of fusion of acetic acid = H^o_{fus}=10.8 kJ/mol

Heat of sublimation of acetic acid = H^o_{sub}=?

CH_3COOH(s)\rightarrow CH_3COOH(g)..[3]

[1] + [2] = [3] (Hess's law)

H^o_{sub}=H^o_{vap}+H^o_{fus}

=24.3 kJ/mol+10.8 kJ/mol=35.1 kJ/mol

35.1 kJ/mol is the expected value for the heat of sublimation of acetic acid.

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Which is true about the potential energy of the reactants in this reaction pathway
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it is equal to the potential energy of the products

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