2 years ago

What is the atomic number of carbon and the number of protons

Chemistry

1 answer:

nevsk [136]2 years ago

7 0

A) if you have a period table handy it’s the number in the top left hand corner of the element

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Which of the following elements has two valence electrons?

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Beryllium, Magnesium, Calcium....etc have two valence electrons

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2 years ago

Carbon naturally occurs in two forms: diamond and graphite. Why do these two forms have very different properties?

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2 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