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3 years ago

Is heat being released or absorbed physical or chemical changes

Chemistry

2 answers:

Vikki [24]3 years ago

4 0

chemical

Explanation:

not sure about it

Rama09 [41]3 years ago

4 0

Answer:

It can be either. If the object releasing or absorbing heat remains the same but in a different state the change was physical.Like an ice cube absorbing heat and melting. However, heat being released by a burning candle is chemical, as the wick burns and becomes smoke. A chemical change is results in a product with new properties.

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Which of the following statements about alkenes is not correct?

professor190 [17]

<span>Option-C: They react mainly by substitution.

Explanation:
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2 years ago

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Answer:

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ANTONII [103]

Answer: Option (a) is the correct answer.

Explanation:

We know that ground state means in total electrons acquired by the element are present in their lowest energy level.

We calculate the azimutal numbers as follows.

n = l + 1

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l = azimuthal quantum number

Values of n can be 1, 2, 3, 4 and so on. Whereas the values of l can be 0, 1, 2, 3, and so on.

Also, "m" is known as magnetic quantum number whose values can be equal to -l and +l.

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2 years ago

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Answer:

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Explanation:

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