Answer:
0.17 atm
Explanation:
Raoult´s law can be applied in solving this problem:
Pa= XaPºa (a= acetyl bromide in this case)
where Pa = partial pressure acetyl bromide
Xa = mole fraction of acetyl bromide in the solution
Pºa= vapor pressure of pure acetyl bromide = 0.75 atm(given)
Hence we can find the mole fraction of the acetone in the mixture:
Let the number of moles of acetone be a and the number of moles of thiophene be t
Xa = mol of a / ( mol of a + mol of t )
We now have;
Molar Weight of a= 112.95 g/mol
number of moles of a = 51.8 g/mol x 1 mol/122.95 g = 0.42 moles
Molar Weight of t = 84.14 g/mol
number of moles of t = 123 g x 1mol/84.14 g= 1.46 mol
mole fraction of a; Xa = 0.42/ (0.42 + 1.46) = 0.22
Pa = 0.22 x 0.75 atm = 0.17 atm
In chemistry, the principal energy level of an electron refers to the shell or orbital in which the electron is located relative to the atom's nucleus. This level is denoted by the principal quantum number n. The first element in a period of the periodic table introduces a new principal energy level.
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The statement that is an alloy is just another word for a chemical compound of fixed composition that is made of two or more metals is false.
An alloy refers to the mixture of the elements in which the parent element is the metal. An alloy is produced by the amalgamation of any element, that is, metal or non-metal to better the feature of the parent metal. The whole components in the alloy are combined to produce a mixture of fixed composition, but not a chemical compound, and it is not essential that the elements involved are metals. Thus, the mentioned statement is false.
Answer:
This is simple, if it has a high flammability, and you light it on fire, then that would be a chemical change.
Explanation:
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