3 years ago

A(n)____is the smallest particle of an element that has the chemical properties of that element.

Chemistry

1 answer:

AnnyKZ [126]3 years ago

8 0

Answer:

Atom

Explanation:

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3 years ago

If hydrochloric acid has a [H+] of 1.2 x 10-2 M, what is the pH?<br> 1.9<br> 0 1<br> 1.2<br> O<br> 8

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Answer:

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ {H}^{+} ]$

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2 years ago

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In the compound cah2 calcium has an oxidation number of 2+ and hydrogen has an oxidation number of

sesenic [268]

The oxidation number of H is -1.

Sum of the oxidation numbers in each element = charge of the complex

CaH₂ has 1 Ca atom and 2H atoms. The charge of the complex is zero. Let’s say Oxidation number of H is "a".

Then,

2a = -2

a = -1

Hence, the oxidation number of Hydrogen atom in CaH₂ is -1

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