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Serjik [45]
3 years ago
14

You place air in a sealed can at standard temperature and pressure (stp). you heat it to four times its absolute temperature (k)

while leaving the volume constant. what happens to the pressure?
Chemistry
1 answer:
pochemuha3 years ago
4 0
By Gayle-Lussac's law, the pressure and temperature of a fixed volume and amount of gas is directly proportional.
Thus,

P/T = constant

So if the temperature is increased four times, the pressure is also increased four times.
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When rolling a number cube 500 times, how many times you expect to get a 3?
andreyandreev [35.5K]

Answer:

\frac{250}{3}

Explanation:

you can expect to get a 3 (theoretically) 1 time every 6 times you roll. A 1/6 chance.

Here's the equation:

\frac{1}{6} =\frac{x}{500}

cross multiply (i think that's what it is called)

500=6x

divide by 6 on both sides:

x=\frac{250}{3} or approx 83 times.

Hope this helps! Lmk if u have more questions <3

3 0
3 years ago
Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy
AnnZ [28]

Answer:

  • Option A. n = 6 to n = 1

Explanation:

Niels Bohr was a Danish physicist who proposed the hydrogen atom quantum model to explain the discontinuity of the atom's emission spectra.

In <em>Bohr hydrogen atom</em> model, the electrons occupy orbits identified with the numbers <em>n = 1, 2, 3, 4</em>, ... Each number (orbit) corresponds to a different energy level  or state. The number n = 1 corresponds to the lowest energy level, and each higher number corresponds to a higher energy level.

This table shows the relative energy of the different orbits of the <em>Bhor hydrogen atom</em><em>:</em>

Orbit      Quantum       Energy      Relative

              number         level          energy

First          n = 1                  1                   E₁

Second    n = 2                 2                2E₁

Third        n = 3                 3                 9E₁

Fourth      n = 4                 4                16E₁

Fifth          n = 5                5                25E₁

Sixth         n = 6                6                36E₁

Seventh    n = 7                7                49E₁

When an electron jumps from a higher energy state down to a lower energy state, it emits a photon with an energy equal to the difference of the energies between the initial and the final states.

Since the <u>n = 6 to n = 1</u> transition results in the higher relative energy difference (36E₁ - E₁ = 35E₁), you conclude that it is this transition which results in <u><em>the emission of the highest-energy photon,</em></u><em> which is the option A. </em>

5 0
3 years ago
Write equations to show whether the solubility of either of the following is affected by pH:(b) Ca₃(PO₄)₂.
Vera_Pavlovna [14]

<u>The </u><u>pH </u><u>of the solution is also </u><u>increased.</u>

<u></u>

What is pH and its importance?

  • pH is an important quantity that reflects the chemical conditions of a solution.
  • The pH can control the availability of nutrients, biological functions, microbial activity, and the behavior of chemicals.
  • The pH is then calculated using the expression: pH = - log [H3O+].

  • The solubility of an ionic compound is affected by the hydronium ion concentration.
  • Addition of H₃O⁺ to the anion of a weak acid, increases the solubility of the ionic compound.

Therefore, the pH of the solution is also increased.

Learn more about pH

brainly.com/question/491373

#SPJ4

8 0
1 year ago
1
mezya [45]

Answer:

A. Magnesium

Explanation:  Its because Magnesium is Heavier than Bromine and there is 24.3050 atom in Magnesium but there is only two in Bromine

I Hope This Helps:)

5 0
3 years ago
When fossils fuels are burned what is their chemical potential energy converted into?
vichka [17]

The chemical potential energy is converted into electrical energy.

3 0
3 years ago
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