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3 years ago

What happens to the partial pressure of oxygen in a sample of air if the temperature is increased?

Chemistry

2 answers:

aalyn [17]3 years ago

8 0

it increases.

Hope this helps

ludmilkaskok [199]3 years ago

6 0

Air is mainly composed of N2 (78%), O2 (21%) and other trace gases. Now, the total pressure of air is the sum of the partial pressures of the constituent gases. The partial pressure of each gas, for example say O2, can be expressed as:

p(O2) = mole fraction of O2 * P(total, air) ----(1)

Thus, the partial pressure is directly proportional to the total pressure. If we consider a sealed container then, as the temperature of air increases so will its pressure. Based on equation (1) an increase in the pressure of air should also increase the partial pressure of oxygen.

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Explain in terms of both electrons and energy how the bright line spectrum of an element is produced

quester [9]

<span>The atoms don't absorb the energy; the electrons absorb the energy. Electrons around atoms, without energy, are in an unexcited state, called a ground state. Once energy is absorbed, however, the electrons become excited, meaning they have more energy and are going to release it. Once they are excited, they make a transition from a lower valence shell to a higher valence shell, which is the transition state. Then, the electrons fall back to their own valence shell, releasing the energy, and are put in the ground state again. The energy that is released as quanta, which is how a bright-line spectrum is produced.</span>

4 0

3 years ago

¿Cuánto calor es necesario suministrar a 2 kilogramos de aluminio para que eleve su temperatura 20°C?

solong [7]

How much heat is necessary to supply 2 kilograms of aluminum to raise its temperature by 20 ° C?

Answer:

36000J

Explanation:

Given parameters:

Mass of aluminum = 2kg = 2000g

Temperature rise = 20°C

Unknown:

Amount of heat needed for the temperature change = ?

Solution:

The amount of heat needed to cause this temperature rise is given as;

H = m c (T₂ - T₁)

H is the amount of heat

m is the mass

c is the specific heat of aluminum = 0.9J/g°C

Insert the parameters and solve;

H = 2000 x 0.9 x 20 = 36000J

4 0

3 years ago

The water molecule H2O is polar because it contains two polar single bonds and A. its molecule has a linear shape. B. molecules

Anni [7]

<span>c. it has a bent shape</span>

4 0

3 years ago

Read 2 more answers

2 upper N upper O subscript 2 (g) right arrow 2 upper N upper o (g) plus upper O subscript 2 (g). Second: 2 upper N upper O (g)

Ipatiy [6.2K]

The equation for the overall reaction obtained by adding these equations is; 2NO₂(g) ⇒ N₂O₄(g)

<h3>How to simplify chemical equations?</h3>

We are given equations;

2NO₂(g) ----> 2NO(g) + O₂(g) ---(1)

2NO(g) -----> N₂(g) + O₂(g) -----(2)

N₂(g) + 2O₂(g) ----> N₂O₄(g) -----(3)

Add eq 1 and eq 2 to get;

2NO₂(g) + 2NO(g) ⇒ 2NO(g) + O₂(g) + N₂(g) + O₂(g)

2NO will cancel out to get;

2NO₂(g) ⇒ N₂(g) + 2O₂(g) -----(4)

Add eq 3 to eq 4 to get;

N₂(g) + 2O₂(g) + 2NO₂(g) ⇒ N₂O₄(g) + N₂(g) + 2O₂(g)

This will reduce to;

2NO₂(g) ⇒ N₂O₄(g)

The correct question is;

Consider the chemical equations shown here.

2NO₂(g) ----> 2NO(g) + O₂(g)

2NO(g) -----> N₂(g) + O₂(g)

N₂(g) + 2O(g) ----> N₂O₄(g)

What is the equation for the overall reaction obtained by adding these equations?

Read more about chemical equations at; brainly.com/question/19837884

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5 0

2 years ago

Which two things cause the orbits of the planets to be the nearby circular

GalinKa [24]

Answer:Gravity and inertia

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3 years ago