If you pump air into cycle tyre a slight warming effect is noticed at valve stem why

1 answer:

8 0

Probably the kinetic energy of rubbing the pump against the valve, combined with the increase in gas pressure in the tire itself.

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4. Substances that existed before mixing-still exist-after substances-are-mixed----

pantera1 [17]

False; Because when 2 substances are mixed another substance is created.

5 0

3 years ago

Consider the following reaction at 298 K.

Jlenok [28]

Answer and Explanation:

The reaction is in the gas phase, so the equilibrium constant is expressed in terms of the partial pressures (P) of the products and reactants, as follows:

$Kp = \frac{P^{2}_{SO_{3} } }{P_{SO_{2}} ^{2}P_{O_{2}} }$

We have the following data:

P(SO₃) = 2.6 atm

P(O₂) = 0.43 atm

We need Kp for this reaction. We can assume that in Appendix 4 we found that Kp = 7 x 10²⁴.

Then, we introduce the data in the equilibrium constant expression to calculate the partial pressure f SO₂ (PSO₂), as follows:

$P_{SO_{2} } = \sqrt{\frac{P_{SO_{3} } ^{2} }{Kp P_{O_{2} } } } = \sqrt{\frac{(2.6 atm)^{2} }{(7 x 10^{24)}(0.43 atm) } } = 1.5 x 10^{-12} atm$

Therefore, the partial pressure of SO₂ is 1.5 x 10⁻¹² atm (for the given Kp).

4 0

3 years ago

What happens to gas particles when they are compressed?

Anuta_ua [19.1K]

Answer:

3)Some gas molecules move further apart and some move closer together.

Explanation:

because When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. The particles exert more force on the interior volume of the container. This force is called pressure. There are several units used to express pressure.

4 0

3 years ago

A man walked 1560 meters in 16000 seconds what is the speed at which he walked

Maslowich

In what meters? miles an hour? i can’t answer unless i know that

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3 years ago

Which is a strong base? A. HCl B. NaOH C. NH3 D. H3CO3

ra1l [238]

Answer:

Explanation:

4 0

3 years ago