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melomori [17]
3 years ago
8

NEED HELP ASAP!!!

Chemistry
1 answer:
Alexxx [7]3 years ago
6 0

At room temperature oxygen, O_2 is present in the gas phase.

A gas is defined as a substance which is characterized by the rapidly movement of molecules which are widely separated. The shape and volume of gas is not definite that is they take on the shape of the container in which it is placed. The gas molecules have minimum inter-nuclear attractions and thus have high kinetic energy.

Thus, the sentences that describes oxygen at room temperature are:

  • It has no definite volume and takes the shape of its container.
  • Its particles move fast enough to overcome the attraction between them.
  • It has more energy than it would be at a cooler temperature as the kinetic energy is directly proportional to the temperature that is kinetic energy increases on increasing the temperature.

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10 points!
Alik [6]

I believe that it is all of the above.

"A Scientific Hypothesis Must Be "Falsifiable". A scientific hypothesis must be testable, but there is a much stronger requirement that a testable hypothesis must meet before it can really be considered scientific."

I hope this helped, have a nice day!

6 0
3 years ago
Read 2 more answers
Which of the following is one part of a chemical formula?
melomori [17]

Answer:

C

Explanation:

You would be correct in guessing C as in a chemical formula symbol of each element is stated.

Like Salt is Sodium Chloride, and its chemical formula is NaCl (Na=sodium, Cl= chloride)

7 0
3 years ago
PLEASE HELP ME ASAP URGENT IM STRESSED AND STUCK
Genrish500 [490]
Is there any more info lol
But from thinking I got A=DH^2*BC
8 0
2 years ago
What is one way to separate a mixture?
Dmitry_Shevchenko [17]
1. <span>Substances in a </span>mixture<span> can be separated using different </span>methods, for example <span>distillation (separation of two liquids).
2. </span>Mass<span> is the amount of matter an object contains.
</span>Volume is t<span>he amount of space occupied by a three-dimensional object.
3. d(wallet) = 15g</span>÷5cm³ = 3g/cm³.
4. Weight of an astronaut also increases. W=m·g.
7 0
3 years ago
Which part of the atom forms chemical bonds?
Leokris [45]
Out of the choices given, the part of the atom that forms chemical bonds are the outermost electrons. The correct answer is B. 
8 0
3 years ago
Read 2 more answers
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