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: Matter is everything
Explanation:
The dirt, seawater, and the plants all comprise various substances, therefore, making them a mixture of substances. The dirt is generally an amalgamation of various kinds of rocks and soil, the rocks and soils exhibit distinct compositions, comprising anything from life and dead matter.
The seawater majorly comprises salt and water, therefore, making it a mixture of some of the constituents. The plants exhibit all the kinds of chemicals in them, one of the most prevailing is the water, they are also considered as the natural storehouse of carbon, along with these the plants also possess various other components, therefore, making them a mixture of components.
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For the purpose we will use solution dilution equation:
c1V1=c2V2
Where, c1 - concentration of stock solution; V1 - volume of stock solution needed to make the new solution; c2 - final concentration of new solution; V2 - final volume of new solution.
c1 = 100%
c2 = 75%
V1 = 1 gal
V2 = ?
When we plug values into the equation, we get following:
100 x 1 = 75 x V2
V2= 100/75 = 1.33 gal
Now we can determine the necessary volume of water:
V(water)= V2 - V1 = 1.33 - 1 = 0.33 gal water should be added
<span>B.The oxygen isotopes contain 8 electrons but each contains a different number of neutrons and protons - 8 and 10 respectively.</span>