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Lina20 [59]
2 years ago
13

I'm asking again because the other one I did won't show up. Also please explain! Thanks! :)

Chemistry
2 answers:
valina [46]2 years ago
7 0

Answer:

Answer is c the moon passes in between the sun and the earth.

Explanation:

I hope this helps.

Cloud [144]2 years ago
6 0
Ok so the answer is c!!!
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a beaker of benzene is at room temperature. what is its vapor pressure. Is this vapor pressure large enough to cause the benzene
Serhud [2]

Answer:

(1). The vapor pressure is 91 mmHg at 20°C.

(2). No, benzene will not boil at sea level.

Explanation:

Benzene, C6H6 is an aromatic, liquid compound with with molar mass of 78.11 g/mol and Melting point of 5.5 °C. One of the importance or the uses of benzene is in the making of fibres and plastics.

The vapour pressure of benzene can be gotten from the table showing the vapor pressure of different liquids.

Boiling point can simply be defined as the point or the temperature in which the vapor pressure is the same with the atmospheric pressure.

The atmospheric pressure is 760mmHg, while the vapor pressure at sea level is at the temperature of 15°C which is equal to 71 mmHg( from the table showing the vapor pressure of different liquids).

71 mmHg is not equal to 760 mmHg, thus, at sea level Benzene will not boil.

8 0
3 years ago
1. Caused by movement of rocks<br>below the surface. is Called?​
valentina_108 [34]
I don’t know what to do with the answer I don’t know how you feel sorry I didn’t
3 0
3 years ago
Which description best fits a gas? definite shape and volume; strong intermolecular attractions definite volume; shape of contai
wolverine [178]

The answer is weak intermolecular attractions volume and shape of container. The molecules of gases have high kinetic energy compared to those of liquids and solids hence they are farther apart from one another. This results to weak intermolecular forces. Gases also expand to fit the container hence have no definite shape or volume.

7 0
3 years ago
Please help<br><br><br> How many moles are there in 7.57 x 10^30 molecules of CO2?
Oxana [17]

Answer:

The answer is

<h2>12,574,750.83 moles</h2>

Explanation:

In order to find the moles of CO2 we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 7.57 × 10^30 molecules of CO2

We have

n =  \frac{7.57 \times  {10}^{30} }{6.02 \times  {10}^{23} }  \\  = 12574750.83056...

We have the final answer as

<h3>12,574,750.83 moles</h3>

Hope this helps you

3 0
3 years ago
Using Charles’s law, V1/T1 =V2/T2 and the information below, solve the question. If a balloon takes up 625L at 273K, what will t
pogonyaev

Answer:

The new volume is 808L.

Explanation:

First, you need to set up your proportion, using Charles's law.

V1         V2

<u>      </u>  =   <u>      </u>

T1         T2

Then, substitute for the ones you already know.

625 L            V2

<u>           </u>   =    <u>           </u>

273 K          353 K

Then, you need to cross multiply.

625 x 353 = 273 x V2

Then, solve for V2.

220625 = 273 x V2

220625 ÷ 273 = V2

808 = V2

The final volume is 808L.

4 0
3 years ago
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