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3 years ago

What is the heat in joules required to convert 75.0 grams of water into steam if the ^Hvap of water is 2257j/g?

Chemistry

1 answer:

nikitadnepr [17]3 years ago

7 0

169 000 J. It takes 169 000 J to convert 75.0 g of water to steam.

q = mΔHvap = 75.0 g x (2257 J/1 g) = 169 000 J

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2 years ago

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3 years ago

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3 years ago

When PCl5 solidifies it forms PCl4+ cations and PCl6– anions. According to valence bond theory, what hybrid orbitals are used by

Vlad1618 [11]

Answer:

sp³

Explanation:

Number of hybrid orbitals = ( V + S - C + A ) / 2

Where

H is the number of hybrid orbitals

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S is the number of single valency atoms = 4

C is the number of cations = 1

A is the number of anions = 0

For PCl₄⁺

Applying the values, we get:

H = ( 5+4-1+0) / 2

= 4

This corresponds to sp³ hybridization.

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3 years ago

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