4 years ago

(periodic table) i'm not looking for an answer but rather an explanation. do i put in an element with the traits? i'm confused

1 answer:

7 0

Halogens r in group 7a

Alkali metals r in group 1a

Nobel gases r in group 8

Transition metals r from 3b to 12b

Non metals have properties that r the opposite of metals

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3 years ago

How much heat does it take to increase the temperature of 2.70 mol of an ideal gas by 30.0 K near room temperature if the gas is

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Answer:

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Explanation:

Given:

n= no. Of mol= 2.70 mol

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Q= n Cv × ∆T .........eqn(1)

Where CV= molar heat capacity=5/2R for diatomic particle ,such as H2

CV= molar heat capacity=3/2R for diatomic, such as H

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For a diatomic molecules

Q= n Cv × T

But

Cv= molar heat capacity=5/2R = 5/2(8.314)=20.785

CV= 20.785

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Then substitute the values into the eqn(1)

Q= 2.70 × 5/2(8.314) × 30

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3 years ago

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a

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Answer: The correct formula for phosphorous pentachloride is $PCl_5$ because a subscript 5 indicates five chlorine (Cl) atoms.

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4 years ago

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