Opening a soda bottle illustrates how a decrease in pressure will___the amount of gas that can be dissolved in water.
2 answers:
<u>Answer:</u> The correct answer is Option b.
<u>Explanation:</u>
This solubility of a gas with change in pressure is described by Henry's Law.
This law states that the mass of a gas dissolved in a given volume of the liquid at constant temperature is directly proportional to the pressure of the gas present in equilibrium with the liquid.
Mathematically,
or,
Where, m = mass of the gas dissolved in a unit volume of the solvent
K = Proportionality constant
p = Pressure of the gas in equilibrium with the solvent.
With increase in pressure, the mass of gas dissolved will also increase and vice-versa.
Hence, the correct answer is Option b.
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194.5 g of BCl₃ is present in 1 × 10²⁴ molecules of BCl₃.
Explanation:
In order to convert the given number of molecules of BCl₃ to grams, first we have to convert the molecules to moles.
It is known that 1 moles of any element has 6.022×10²³ molecules.
Then 1 molecule will have moles.
So
Thus, 1.66 moles are included in BCl₃.
Then in order to convert it from moles to grams, we have to multiply it with the molecular mass of the compound.
As it is known as 1 mole contains molecular mass of the compound.
As the molecular mass of BCl₃ will be
Mass of boron is 10.811 g and the mass of chlorine is 35.453 g.
Molar mass of BCl₃ = 10.811+(3×35.453)=117.17 g.
So, 194.5 g of BCl₃ is present in 1 × 10²⁴ molecules of BCl₃.