Chemistry, 09.01.2020 07:31, zoel222

You have a bottle of hexane and a bottle of octane,
bothcolourless liquids.
the labels have dissapeared from both. suggest how you
coulddistinguish between them.

Answers: 2

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Answers

answered: ayoismeisalex

Explanation:

Chemical formula of hexane is $C_{6}H_{14}$ and chemical formula of octane is $C_{8}H_{18}$ . Molecular mass of hexane is 86.18 g/mol and molecular mass of 114.23 g/mol.

Smaller is the molecular mass of a substance then less dispersion forces will be present in it. As a result, it will have less strong bonding between its combining atoms. Therefore, it will have high volatility.

Therefore, hexane having small molecular mass will be more volatile in nature as compared to octane.

Therefore, in the given situation when labels from both the bottles disappear then liquid which will evaporate readily into the atmosphere will be hexane and another one will be octane.

answered: Guest

Mass is the amount of matter in an object. weight is the measurement of the pull of gravity on an object. say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165) now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon. however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant. in conclusion it is possible for your weight to change as your mass remains constant.

answered: Guest

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

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You have a bottle of hexane and a bottle of octane,
bothcolourless liquids.
the labels h...