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mrs_skeptik [129]
3 years ago
7

Cuales son las caracteristicas del paralelogramo.Ayudame porfavor​

Chemistry
2 answers:
igomit [66]3 years ago
5 0

Answer:

LOL

Explanation:

Nataliya [291]3 years ago
4 0

Answer: es básicamente una plaza parral. De nada :3

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A mixture of helium, nitrogen and oxygen has a total pressure of 756 mmHg. The partial
Karolina [17]

Answer:

The  partial pressure of oxygen in the mixture is 296 mmHg.

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone.

This relationship is due to the assumption that there are no attractive forces between the gases.

So, in this case, the total pressure is:

PT=Phelium + Pnitrogen + Poxygen

You know:

  • PT= 756 mmHg
  • Phelium= 122 mmHg
  • Pnitrogen= 338 mmHg
  • Poxygen= ?

Replacing:

756 mmHg= 122 mmHg + 338 mmHg + Poxygen

Solving:

756 mmHg - 122 mmHg - 338 mmHg = Poxygen

Poxygen= 296 mmHg

<u><em>The  partial pressure of oxygen in the mixture is 296 mmHg.</em></u>

6 0
3 years ago
I'm confused
aleksley [76]

Answer:

Energy

Explanation:

Between gas to liquid, or liquid to gas, will give off extra energy to the surrounding environment

4 0
2 years ago
Read 2 more answers
The gas phase decomposition of hydrogen peroxide at 400 °C
Flura [38]

Answer:

t = 71.3 s

Explanation:

Hello there!

In this case, since the second-order integrated law is given by the following equation:

\frac{1}{[H_2O_2]} =\frac{1}{[H_2O_2]_0}+kt

Thus, given the initial and final concentration of hydrogen peroxide and the rate constant, we obtain the following time:

\frac{1}{[0.0170M]}-\frac{1}{0.0800M}=0.650M^{-1}s^{-1}t\\\\t=\frac{46.32M^{-1}}{0.650M^{-1}s^{-1}} \\\\t=71.3s

Best regards!

3 0
3 years ago
True or false: polyvalent cations are usually transition metals​
Rasek [7]

Answer:True

Explanation:

Most of the transition metals—those metals in the center d-block of the periodic table—are polyvalent. Since they can form cations with different charges, those charges must be specified when naming the ions and when naming compounds containing those ions.

If you found my answer useful then mark me brainliest.

6 0
3 years ago
QUICK HELP!!!!!
Rzqust [24]
That is a chemical change
8 0
3 years ago
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