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2 years ago

How do you use the changes in the phase of water to keep you cool?

Chemistry

1 answer:

sineoko [7]2 years ago

8 0

Answer:

by freezing

Explanation:

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A proton is moving toward a second, stationary proton. What happens as the<br> protons get closer?

Vlad [161]

Answer:

they repel

Explanation:

because like charges repel

5 0

2 years ago

Read 2 more answers

The pressure of a sample of helium is 1.556 atm in a 268.5 mL container. If the container is compressed to 112.4 mL without chan

Rainbow [258]

Answer:

a. 3.72 [atm]

Explanation:

For a gas at constant temperature, (with no change in number of molecules of the gas), we can apply Boyle's Law: $P_1V_1=P_2V_2$

$(1.556[atm])(268.5[mL])=P_2(112.4[mL])$

$\dfrac{(1.556[atm])(268.5[mL\!\!\!\!\!\!\!\!{--}])}{112.4[mL \!\!\!\!\!\!\!\!{--}]}=\dfrac{P_2(112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----})}{112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----}}$

$3.716957[atm]=P_2$

It seems like the answer should have 4 significant figures since all of the other quantities have 4 significant figures, but the closest answer choice of those provided is a. 3.72

3 0

2 years ago

A pyramid of energy is used to analyze the amount of energy available at each feeding level in a food chain. Using the pyramid a

Troyanec [42]

C is the answer it’s not d because mackerel does not eat tuna I’m not sure tho

8 0

3 years ago

Read 2 more answers

How many moles of calcium chloride are contained in a 333 gram sample?

Bogdan [553]

Answer & Explanation:

The molar mass of calcium chloride is 110.98 g/mol. We can use this information to solve this problem. We can set up our equation like this..

$\frac{333 g(CaCl2)}{} *\frac{1mol(CaCl2)}{110.98g(CaCl2)}$

Multiply straight across on the top and straight across on the bottom.

$\frac{333}{110.98}$

Now divide.

$\frac{333}{110.98}=3.00$

So, there are 3.00 moles of calcium chloride contained in a 33 gram sample which is answer choice D.

6 0

3 years ago

Which structural adaptation would help a plant survive better in shady environment ?

kramer

The answer is large leaves.

These enable the plant to absorb more of the scarce sunlight it receives, so it can create enough nutrients for it to survive.

4 0

3 years ago