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2 years ago

When you apply heat energy to a substance, where does the energy go? Think about the law of conservation of energy.

Chemistry

1 answer:

Softa [21]2 years ago

8 0

Answer:

the heat energy is transformed to any kind of energy depending on what it's meant to be transformed to.

remember it cannot be destroyed so it's definitely transformed to some kinda energy

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How is a pair of molecular orbitals formed?

Montano1993 [528]

When two atoms combine, the overlap of their atomic orbitals produces molecular orbitals.

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3 years ago

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A solution made by mixing 20.0 g of a non-volatile compound with 125 mL of water at 25°C has a vapor pressure of 22.67 torr. Wha

Ainat [17]

We have that the molecular weight (3sf) of the compound (g/mol)

$m=44.15g/mol$

From the question we are told

A solution made by mixing 20.0 g of a non-volatile compound with 125 mL of water at 25°C has a vapor pressure of 22.67 torr. What is the molecular weight (3sf) of the compound (g/mol).

Generally the equation for the Rouault's law is mathematically given as

P=P_0 N

$22.67=23.8*\frac{\frac{12.5}{18}}{\frac{125}{18}+\frac{15}{m}}\\\\\6.95+\frac{15}{m}=7.29\\\\\frac{15}{m}=7.29-6.95\\\\m=\frac{15}{0.34}\\\\m=44.11g/mol$

Therefore

The molecular weight (3sf) of the compound (g/mol)

$m=44.15g/mol$

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2 years ago

Which molecule is amphoteric?

frosja888 [35]

Answer:

The answer is B

Explanation:

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3 years ago

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A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound res

gogolik [260]

Answer:

c. Cr

Explanation:

$Cr^3+(aq) + CO_3^2-(aq) ------------> Cr_2CO_3(s)$

The compound is containing $CO_3^2-$ ion.

If acid reacts with it, CO_2 evolves.

$H^+ + CO_3^2- ----------> H_2O + CO_2$

therefore, Cr would form a precipitate when added to an aqueous solution of this compound. Cr2CO3 is the precipitate.

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3 years ago

Western regions Facts

babunello [35]

This region has both the state with the smallest population (Wyoming) and the largest population (California).
Alaska's land area is much bigger than any other state, but it has one of the lowest populations.
The western US takes up about half of the land of the United States.

The western United States is the region comprising the westernmost states of the United States. As American settlement in the U.S. expanded westward, the meaning of the term the West changed. Before about 1800, the crest of the Appalachian Mountains was seen as the western frontier.

Hope this helps :)

Have a great day!

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3 years ago