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Zinaida [17]
3 years ago
15

HELPPPPPPPP PLZZZZ MVP ME .!!!

Chemistry
1 answer:
kifflom [539]3 years ago
8 0
Rome is in Italy, which is represented by D.
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What is a star that collapsed under gravity called?
Ratling [72]
<span>Neutron Star hope this helps</span>
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3 years ago
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50 mL of a chlorofluorocarbon gas effused through a porous barrier in 157 seconds. The same volume of argon effused in 76 second
Anna11 [10]

Answer:

CCl_{2}FCF_{3}

Explanation:

To solve this equation we can use Graham's Law of effusion to calculate the molar mass of the chloroflourocarbon

\sqrt{\frac{M_{1} }{M_{2} } } = \frac{t_{1} }{t_{2} } \\\\\sqrt{\frac{M_{1} }{39.948 } } = \frac{157 }{76}\\\\\\M_{1}  = 170.477\\

Which chloroflorocarbon has this molar mass?

C2Cl2F4

7 0
3 years ago
Which biological fuel contains the most chemical energy per gram?
Irina18 [472]

Answer: Fats

Explanation:

The food energy can be defined as the chemical energy that animals or humans receive from the food they eat via cellular respiration. The food energy is in the form of biological fuel which are necessary for metabolic processes in the body like respiration, cell growth and repair, reproduction, digestion and other functions.

The food consists of biomolecules like proteins, carbohydrates, fats and others which act as biological fuels.

The fat is a biological fuel which contains the highest amount of food energy per gram. The fat contains 37kcal/g energy. Proteins and carbohydrates only provide 17kcal/g energy.

The fats are stored in the adipocytes of the humans and animals and are the energy reservoirs.

7 0
3 years ago
Which trait is most likely a result of artificial selection
ycow [4]

Answer:

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3 years ago
State in which a substance has definite shape and a definite volume​
Bad White [126]

the answer is solid, a liquid has a definitive volume but not shape, and a gas doesnt have a definitive shape nor volume

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3 years ago
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