2 years ago

How is boiling water different from burning gasoline?

Chemistry

1 answer:

cluponka [151]2 years ago

6 0

Boiling water is a physical change while burning gasoline is a chemical change.

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When NH3(aq) is added to Cu2 (aq), a precipitate initially forms. Its formula is:

Rasek [7]

It’s B the cu looses its 2 and passes it to the NH3 that needs a bracket to separate them. The NH3 doesn’t loose its 3 because it’s already a compound!
Hope this helps!

3 0

3 years ago

As an alternative energy source, nuclear energy is more harmful to the environment than a coal-fired power plant because it prod

mel-nik [20]

Answer:

False

Explanation:

It is coal-fired power plants that produce mercury, air pollution, and carbon dioxide.

However, nuclear energy produces radioactive waste that must be stored for many years before it can be safely disposed.

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2 years ago

The autonomic nervous system consists of what parts?

Leokris [45]

Answer:

A. Sympathetic

and

C. Parasympathetic

Explanation:

Ap3x

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2 years ago

A sample of sulfuryl fluoride, SO2F2, has a mass of 19.2 g. What amount, in moles, does this mass represent?

snow_tiger [21]

Answer:

0.188 moles

Explanation:

moles=mass/molar mass

moles= 19.2/ (32+32+38)

moles= 0.188

5 0

3 years ago

Read 2 more answers

Scintillatium has a halflife of 16 minutes. if a sample has 800 grams, find a formula for its mass after t minutes.

hichkok12 [17]

<span>Halflife is the time needed for a radioactive molecule to decay half of its current mass. If t is the time elapsed, the formula for the halflife would be:
final mass= original mass * </span> $\frac{1}{2} ^{\frac{t}{halflife}$
<span>
If you put the information of the problem into the formula, the equation will be:
</span>final mass= original mass * $\frac{1}{2} ^{\frac{t}{halflife}$
final mass= 800g * $\frac{1}{2} ^{\frac{t}{16 min}$

8 0

3 years ago