3 years ago

Urgent!!

Chemistry

1 answer:

harkovskaia [24]3 years ago

8 0

speed = distance / time

time = 12 m / 60 m/s

time = 0.20 seconds

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What is the oxidation of KCL?

Assoli18 [71]

Rules:

1) The oxidation number of a monatomic ion equals the charge of the ion.

2)The oxidation number of a Group 1 element in a compound is +1.

3) The oxidation number of a Group 17 element in a binary compound is -1.

4) The sum of the oxidation numbers of all the atoms in a neutral compound is 0.

KCl is an ionic compound. Consists of K+ ions and Cl- ions.

Oxidation of K= +1 (rules 1 and 2)

Oxidation of Cl= -1 (rules 1 and 3)

Rule 4 also applies- +1 + (-1)= 0- a neutral compound

Hope this helps :)

Explanation:

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Given that the mass of coffee in the cup = 140 g

Final temperature = $20^{0}C$

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