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Inga [223]
3 years ago
8

At constant pressure and 25^0C , a sample of gas occupies 4.5lit. at what temperature will the gas occupy 9.0lit.​

Chemistry
1 answer:
olga55 [171]3 years ago
4 0

Answer:

Final temperature = 149 K

Explanation:

Given data:

Initial temperature = 25°C (25+273 = 298 K)

Initial volume = 4.5 L

Final temperature = ?

Final volume = 9.0 L

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂/V₁  

T₂ = 4.5 L × 298 K / 9.0 L

T₂ = 1341 L K / 9.0L

T₂ = 149 K

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4 0
3 years ago
Given 6193 mL of a gas at 62.3 °C. What is its volume at 38.1 °C?
Luden [163]

Answer:

5746.0 mL.

Explanation:

We can use the general law of ideal gas:<em> PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

If n and P are constant, and have two different values of V and T:

<em>V₁T₂ = V₂T₁</em>

<em></em>

V₁ = 6193.0 mL, T₁ = 62.3°C + 273 = 335.3 K.

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5 0
3 years ago
At 25 °C, how many dissociated h ions are there in 341 ml of an aqueous solution whose ph is 11. 93?
leonid [27]

0.017×10^{23} dissociated H ions are there in 341 ml of an aqueous solution whose ph is 11. 93

If pH = 11.93

pOH = 14.00 - 11.93 = 2.07

[OH- ] = 10^{-2.07}

[OH-] = 0.00851138 M

In 1 L solution we have 0.00851138 M moles OH- ions

In 0.341 L we have,

0.00851138  * 0.341

=0.0029 moles OH- ions

1 mol OH- ions = 6.022*10²³ ions

0.0029 moles OH- ions = ( 0.0029)  * (6.022*10²³)

= 0.017×10^{23}

Therefore,   0.017×10^{23} dissociated H ions are there in 341 ml of an aqueous solution whose ph is 11. 93

Learn more about dissociated ions here;

brainly.com/question/23525445

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