3 years ago

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

Chemistry

1 answer:

sesenic [268]3 years ago

7 0

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,

(+2) + 2 x a = 0

+2 + 2a = 0

2a = -2

a = -1

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

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Based on the grammar and language of the poster why is it surprising that Tubman is referred to illiterate

ludmilkaskok [199]

Incomplete question. However, I assumed you are referring to this poster.

Explanation:

Interestingly, we notice that Harriet Tubman made use of figurative language in her words. She used the literary device of personification; in which a thing or condition is spoken as though it was human or living.

By this using such kind of expression that has been used by literate individuals, it makes it surprising that Tubman is referred to as an illiterate.

For example, she personified "death", and "liberty" as objects she could have, obviously those were beautiful words which we expect only an educative person to say.