Solutions containing two substances in the aqueous phase are usually described in volume percentages. Therefore, if a solution has 30% of ethanol, then it has 30% ethanol by volume. The remaining volume is of water, which will be 70%. Calculating:
70% x 100
= 70 ml of water in the solution
Answer:
percentage of red skittles = 22%
percentage of skittles that are not green = 74%
Explanation:
total skittles = 50
yellow = 12
orange = 9
red = 11
green = 13
purple = 50-12-9-11-13
= 5
1) percentage of red skittles
2) percentage of skittles that are not green
Answer:
Solubility of gases in water: a. decreases with increasing pressure above solution. b. increases with increasing pressure above solution.c. is independent of pressure above solution.d. Gases are not soluble in water.e. none of the above
The answer to the question is option B (increases with increasing pressure above solution).
Explanation:
Solubility is the chemical property of a solute to dissolve into a solvent. The solubility which is the characteristic property of a specific solute–solvent combination of a substance fundamentally depends on the solvent used, as well as temperature and pressure.
Concentration of molecules in the gas phase increases with increasing pressure. At low pressure, a gas has a low solubility, while at at high pressure, a gas has a high solubility. The rate at which gas molecules collide with the surface of the liquid and dissolve depends on the pressure of the gas in relation to the number of molecules of gas per unit volume. The solubility of gases in water, makes an increase in pressure result in a proportional increase in solubility, whereas a decrease in pressure decreases solubility.
This can be expressed in the equation: C= k x Pgas
where C= solubility of gas in solvent, k= proportionality constant and Pgas = partial pressure of the gas above the solution.
Answer:
b
Explanation:
beacuse when u reduce the concentration