Answer:
The mol fraction of sucrose in an aqueous solution at 20°C is 0.114
Explanation:
Step 1: Data given
The vapor pressure of water above the solution is 2.0 mmHg
The vapor pressure of pure water at 20 °C is 17.5 mmHg
Step 2: Calculate the mol fraction of sucrose
Psolution = (χsolvent) (P°solvent)
⇒with Psolution = the vapor pressure of the solution is 2.0 mmHg
⇒with χsolvent = the mol fraction of sucrose = TO BE DETERMINED
⇒with P°solvent = the vapor pressure of pure water at 20 °C =17.5 mmHg
2.0 mmHg = X * 17.5 mmHg
X = 2.0 mmHg / 17.5 mmHg
X = 0.114
The mol fraction of sucrose in an aqueous solution at 20°C is 0.114
Dalton's law of partial pressures states that the total pressure of a gas mixture is equal to the sum of the partial pressures of its individual gases.
<h3>What is partial pressure?</h3>
Partial pressure is defined as the pressure exerted by individual gas constituents that makes up a mixture of gases.
According to Dalton's law of partial pressures which states that the total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases.
This can be represented mathematically by the following:
P = P1 + P2
Where P = total pressure
P1 = partial pressure of gas 1
P2 = partial pressure of gas 2.
Learn more about gas laws here:
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Answer:
the total number of elections in an atom of cu_65 is 29.
Answer:
Cornea >iris>lens >retina
Explanation:
Can't exactly figure out the answer but I think it should look like this
Answer
A. It changes the rate, R
Explanation
When we change the concentration of the reactants in a chemical reaction, it affects the rate of reaction that happens in the process. Typically, the rate of reaction will decrease with time if the concentration of the reactants decreases because the reactants will be converted to products. Similarly, the rate of reaction will increase when the concentration of reactants are increased.