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sergeinik [125]
3 years ago
7

1) What happens to the Mercury on a cool day in a thermometer??

Chemistry
2 answers:
Ivahew [28]3 years ago
8 0
Like most liquids, mercury expands, or gets bigger, when heated. As the environment gets warmer, the expanding mercury inside the narrow glass tube of the thermometer has nowhere to go but up. When the temperature cools, the mercury slides back down the tube.
Aleks [24]3 years ago
5 0

Answer:

it's level goes down

Explanation:

because the temperature is low, so mercury level is down

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Why can water dissolve many substances
leva [86]

Answer:

a substance that can dissolve other molecules and compounds, which are known as solutesBecause of its ability to form hydrogen bonds, , meaning that it can dissolve many different kinds of molecules.

Explanation:

6 0
3 years ago
Based on your knowledge of oxygen ion and that Iron can exist as a +2 or a +3 ion. In the formula FeO, what is the charge of the
DerKrebs [107]

Answer:

+2

Explanation:

Oxygen ions always have the charge of -2. Since Fe is in the transition metal stage, it doesn't have a specific set of ions unless specifically shown. In the equation FeO, we would have to have a +2 charge when equalling the two atoms together. So when combines the charges would look like:

Fe_{+2} + O_{-2} = FeO

I am happy to help with any other questions you might have, and I will continue to work to providing the best answers for you :)

6 0
4 years ago
a cork is able to float on water because it is A: a crystalline sold B: equal density to water C: small in size D:less dense tha
Radda [10]
It's most likely less dense than the water
7 0
3 years ago
Read 2 more answers
What is the purpose of the flame that is lit below a hot air balloon
SashulF [63]

Answer:

A hot air balloon uses a burner to heat up the air inside the balloon. The burner is usually fueled by liquid propane. The burner mixes the fuel with air and ignites the mixture, which creates a flame directly underneath the bottom opening of the hot air balloon.  Once the air inside the balloon begins to get warm, the balloon will rise. The pilot controls the balloon’s altitude by releasing hot air from a vent at the top of the balloon, releasing the warmer air causes the balloon to descend.

Explanation:

6 0
3 years ago
Read 2 more answers
What is the total amount of matter in an ecosystem doing? always changing always increasing always decreasing remaining the same
Ilya [14]

Answer:

Remaining the same

Explanation:

By the Lavoisier's principle the matter can't be created nor destroyed, but always transformed.

It means that in an ecosystem, the matter, and also the energy, is not increasing and not decreasing, the total amount remains the same, but in different forms.

5 0
3 years ago
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