Reactivity<span> refers to a chemical property </span>
Note that
1 m = 3.2808 ft
Therefore
1 km = 3280.8 ft
and
Answer: 1.0682 x 10⁵ ft/hr
Answer : 0.125 M
Explanation : The definition of osmotic pressure is "<span><em>the pressure can be applied on a pure solvent to prevent it passing into a given solution by osmosis</em>".
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So according to this definition, osmotic pressure can be called as directly proportional to the concentration of the solution and hence the pressure can also be directly proportional to the concentration.
Hence, if pressure is getting decreased from 28 to 7 it means it got decreased by 4 times;
28 / 7 = 4 that means;
So the concentration will be also decreased by 4 times so, 0.50 / 4 = 0.125 M
Answer:
Mole fraction of B is 0.76
Explanation:
The pressure of a mixture of gases using vapor pressure and mole fraction of each gas is:
P = P°aₓXa + P°bₓXb + ... + P°nₓXn
<em>Where P is pressure of the system, P° is vapor pressure of pure gas and X is its mole fraction.</em>
In the problem, the pressure of the mixture of two gases is 740torr, mol fraction of A is 0.24 and vapor pressure of B is 800torr, that is:
740torr = P°aₓ0.24 + 800torrₓXb
Also, the sum of mole fractions for each of the compounds in the mixture is 1, that is:
1 = Xa + Xb
As Xa = 0.24
1 = 0.24 + Xb
1-0.24 = Xb
0.76 = Xb
<em>Mole fraction of B is 0.76</em>
Atomic number is also known as proton number, so it would have 11 protons. Assuming you mean a neutral atom, it will have to have an equal number of electrons to protons, so it has 11 electrons too
