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3 years ago

A solution is saturated in CO2 gas and KNO3 at room temperature. What happens when the solution is warmed to 75°C?

Chemistry

1 answer:

nignag [31]3 years ago

6 0

Answer:

gaseous CO2 bubbles out of the solution

Explanation:

We already know that the dissolution of a gas in water is exothermic. Hence, when the temperature of a solution containing a gas is increased, the solubility of the gas decreases and the gas bubbles out of the solution.

Similarly, the dissolution of KNO3 in water is endothermic. This implies that the solubility of the solid increases with increasing temperature.

Thus the solid becomes more soluble at 75°.

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3 years ago

On a cool morning (12"C), a balloon is filled with 1.5 L of helium. By mid afternoon, the temperature has soared to 32°C. What i

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Answer:

1.6 L

Explanation:

Using Charle's law

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So,

T₁ = (12 + 273.15) K = 285.15 K

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3 years ago

After the recycled plastic is released from the machine into the brick mold, explain what will happen to the kinetic energy in t

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3 years ago

What mass of water could be warmed from 21.4 degrees celsius to 43.4 degrees celsius by the pellet dropped inside it? Heat capac

Artist 52 [7]

42.34 g of water could be warmed from 21.4°C to 43.4°C by the pellet dropped inside it

Heat loss by the pellet is equal to the Heat gained by the water.

$q_{w} = -q_{p}$ ….(1)

where, $q_{w}$ is the heat gained by water

$q_{p}$ is the heat loss by pellet

$q_{w}$ = mCΔT

where m = mass of water

C = specific heat capacity of water = 4.184 J/g-°C

ΔT = Increase in temperature

ΔT for water = 43.4 - 21.4 = 22°C

$q_{w}$ = m × 4.184 × 22 …. (2)

Now

$q_{p}$ = $H_{c}$ ×ΔT

where $H_{c}$ = Heat capacity of pellet = 56J/°C

Δ T for pellet = 43.4 - 113 =- 69.6°C

$q_{p}$ = 56 × -69.6 = -3897.6 J

From equation (1) and (2)

-m× 4.184 × 22 =-3897.6

m= 42.34 g

Hence, 42.34 g of water could be warmed from 21.4 degrees Celsius to 43.4 degrees Celsius by the pellet dropped inside it.

Learn more about specific heat here brainly.com/question/16559442

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2 years ago