In order to calculate for the mole fraction of benzene, you will need to convert all mass into moles. This can be done through dividing the mass with the elements’ molar mass. Since the molar mass of HCl is 36, the number of moles of HCl in the solution is 2 moles. Meanwhile Benzene has a molar mass of 78 thus having 6 moles in the solution. Dividing 6 moles with the total number of moles which is 8 moles, you would get 0.75 mole fraction of Benzene.
Elements on the periodic table are arranged into groups and periods, and are ordered according to atomic number, not the number of proteins or based solely on reactivity. Each element's place is determined by the number of protons in its nucleus, which also typically equals the number of electrons. Elements in the same group, or column, share similar chemical properties.
The elements on the periodic table are indeed arranged into groups and periods, but they are ordered in line with their atomic number. This atomic number reflects the number of protons in an element's nucleus and also typically matches the number of electrons surrounding the nucleus. Elements in the same vertical column, known as a group, share similar chemical properties.
Each box on the periodic table represents an element, and contains its atomic number, symbol, average atomic mass and (sometimes) name. The elements are arranged in seven horizontal rows, known as periods or series, and 18 vertical columns, called groups. The properties of the elements are periodic functions of their atomic numbers, hence the arrangements.
The reactivity of elements does have a role to play in the periodic table, as element groups possess similar chemical behaviors due to the similar configurations of their outermost electron shell. However, this reactivity does not determine the ordering of elements on the periodic table as the atomic number does. The numbering of proteins error seems to be a typographical mistake as proteins aren't a determinant in the configuration of the periodic table.
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The dispersion force and the dipole force has been the attractive forces that result in the formation of bond within the molecules and result in the change in the properties of the compounds.
The dipole force is a strong force and results in a higher boiling point.
The statements regarding the forces are:
(a) For molecules with similar molecular weights, the dispersion forces become stronger as the molecules become more polarizable.
The statement is true.
(b) For the noble gases the dispersion forces decrease while the boiling points increase as you go down the column in the periodic table.
The statement is true.
(c) In terms of the total attractive forces for a given substance, dipole-dipole interactions, when present, are always greater than dispersion forces.
The statement is false.
(d) All other factors being the same, dispersion forces between linear molecules are greater than those between molecules whose shapes are nearly spherical.
The statement is true.
For more information about the dispersion force, refer to the link:
Answer:
A ,B- false
C,D- true
Explanation:
Dipole forces always lead to stronger attraction and boiling points than dispersion forces. When linear molecules are involved, they often posses greater dipole forces and higher boiling points. Linear alkanes posses higher boiling points than branched alkanes.
Using the periodic table, determine which material is most likely to be a good insulator.
the correct answer is 4. sulfur