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3 years ago

What is an indicator that a chemical change has occurred?

Chemistry

2 answers:

LenaWriter [7]3 years ago

7 0

Answer: a change in energy

Explanation:

Aleks04 [339]3 years ago

6 0

Answer:

That something has changed chemically

Explanation:

Uh...Google it

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An ion with 11 protons 12 neutrons and a charge of + 1 has an atomic number of

posledela

Answer:

11 electrons total and 23amu

Explanation:

This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu.

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3 years ago

A solution containing an equal number of hydrogen ions and hydroxide ions isA. basicB. alkalineC. acidicD. neutral.

Goryan [66]

Answer:

Neutral (Option D)

Explanation:

[H₃O⁺] = [OH⁻] → Neutral solution pH = 7

[H₃O⁺] < [OH⁻] → Alkaline / Basic solution pH > 7

[H₃O⁺] > [OH⁻] → Acidic solution pH < 7

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3 years ago

Magsulat sa iyong sailing lyrics na kanta the tune of meron leron sinta<br>

xxMikexx [17]

Answer:

I am sailing

Home again

'Cross the sea

I am sailing

Stormy waters

To be near you

To be free

I am flying

Like a bird

'Cross the sky

I am flying

Passing high clouds

To be with you

To be free

Can you hear me, can you hear me

Through the dark night, far away

I am dying, forever crying

To be with you, who can say

Can you hear me, can you hear me

Through the dark night far away

I am dying, forever crying

To be with you, who can say

We are sailing, we are sailing

Home again

'Cross the sea

We are sailing

Stormy waters

To be near you

To be free

Oh Lord, to be near you, to be free

Oh Lord

Explanation:

I hope this is the right one

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3 years ago

A 50.00 L sample of gas collected in the upper atmosphere at a pressure of 18.30 torr is compressed into a volume of 0.1500 L. W

andreev551 [17]

Answer:

the ans is in the picture with the steps

(hope it helps can i plz have brainlist :D hehe)

Explanation:

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3 years ago

The law of conservation of energy describes the total amount of energy in a system. Which statements explain why the conservatio

Advocard [28]

It is a statement of fact. explains how energy is produced, and describes the behavior of energy.

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3 years ago