3 years ago

Sentences for chemical energy

Chemistry

1 answer:

Aneli [31]3 years ago

4 0

Chemical energy can be either renewable or nonrenewable

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What would be the formula for diphosphorus pentoxide? A. PO5 B. P2O5 C. P5O D. P5O2

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I am sure, the answer is variant B.

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3 years ago

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Match the element with number of valence electrons

Alla [95]

Answer:

Oxygen-O = 6

Carbon C = 4

Gallium G = 3

Astatine A = 7

Arsenic As = 5

Potassium K = 1

Hydrogen H = 1

Helium H = 2

Explanation:

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2 years ago

The temperature of a substance _______ as its heat of fusion is added to melt the substance. A. increases B. remains constant C.

Alexeev081 [22]

The answer would be B. remains constant.

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3 years ago

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Demonstrate an understanding of Stoichiometry by describing and calculating the components required for a stoichiometric evaluat

NeTakaya

Explanation:

Iam sorry I don't know but why Iam messaging iss because when more people message it usually appears to more people so someone else will be able to help you:)

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3 years ago

Silver can be electroplated at the cathode of an electrolysis cell by the half-reaction. Ag+(aq)+e−→Ag(s) Part A Silver can be e

dmitriy555 [2]

Answer: Mass of silver deposited at the cathode is 37.1g

Explanation: According to Faraday Law of Electrolysis, the mass of substance deposited at the electrode (cathode or anode) is directly proportional to quantity of electricity passed through the electrolyte

Faraday has found that to liberate one gm eq. of substance from an electrolyte, 96500C of electricity is required.

$Ag^+$ +e− ==> Ag(s)

Given that

Current (I) = 8.5A

Time (t) = 65 *60 = 3900s

Quantity of electricity passed = 8.5*3900 =33150C

Molar mass of Ag= 108g

96500C will liberate 108g

33150C will liberate Xg

Xg= (108*33150)/96500

=37.1g

Therefore the mass of Ag deposited at the cathode is 37.1g.

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3 years ago