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3 years ago

Chemistry chemistry chemistry chemistry chemistry chemistry

Chemistry

2 answers:

fgiga [73]3 years ago

8 0

Explanation:

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klasskru [66]3 years ago

6 0

C H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R YC H E M I S T R Y

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These substances are all ____. H2O2 Li NaCl O2 Elements Pure Substances Molecules Compounds

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Your answer is Compounds

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Which substance made up minerals

Alenkasestr [34]

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Chemical element

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When H2(g) reacts with Cl2(g) to form HCl(g) , 185 kJ of energy are evolved for each mole of H2(g) that reacts. Write a balanced

Katyanochek1 [597]

Answer:

H₂(g) + Cl₂(g) → 2HCl(g) + 185kJ

Explanation:

In a chemical reaction, enthalpy of reaction ΔH is a thermodynamic constant that gives information if the reaction is exothermic (Produce heat if reacts) or endothermic (Consume heat if reacts).

In the reaction:

H₂(g) + Cl₂(g) → 2HCl(g) ΔH = -185kJ

As ΔH <0, the reaction is exothermic, that means, produce heat, writing a balanced thermochemical equation:

H₂(g) + Cl₂(g) → 2HCl(g) + 185kJ

The enthalpy is as a product beacause an exothermic reaction produces heat.

I hope it helps!

7 0

3 years ago

How many kilocalories are needed to vaporize 5.8 mol of Br2

Valentin [98]

The vaporization of br2 from liquid to gas state requires 7.4 k/cal /mol.

8 0

2 years ago

Which of the following is the simplest ketone used as an organic solvent?

Lyrx [107]

Answer: Option (d) is the correct answer.

Explanation:

A ketone is an organic functional group that contains a carbon and oxygen atom bonded together through a double bond, that is, C=O.

For example, acetone $CH_{3}-CO-CH_{3}$ is a ketone.

Whereas a hydrocodone is a drug which is used to relieve from moderate to sever pain.It is mostly combined with other drugs and resulting in a chemical formula $C_{18}H_{21}NO_{3}.C_{4}H_{6}O_{6}$ .

A camphor is a volatile white color substance with chemical formula $C_{10}H_{16}O$ . It has aromatic smell and its taste is bitter.

A menthone is also an organic compound with chemical formula $C_{10}H_{18}O$ .

Thus, we can conclude that out of the given options the simplest ketone used as an organic solvent is acetone.

3 0

3 years ago