Answer:
Order of hydrocarbons in decreasing order of boiling point:
Paraffin > Hexadecane > Pentane > Dimethylpropane > Butane
Explanation:
Boiling points of hydrocarbons depend upon:
Mass of the hydrocarbon
Intermolecular forces of interaction
Hydrocarbons of greater mass or greater number of carbons have greater molecular mass.
Molecular formula of paraffin is 
Molecular formula of hexadecane is 
Among given hydrocarbons, number of carbon is highest in paraffin and hence has highest boiling point.
Boiling point of paraffin is followed by hexadecane having second highest number of carbon.
Mass of dimethylpropane and pentane are comparable. But boiling point of dimethylpropane is less than pentane. This is because branching decreases intermolecular force of attraction (van der Waal's force) which leads to decrease in boiling point.
No. of carbon in butane is least among given. So its boiling point is lowest.
Hence, Order of hydrocarbons in decreasing order of boiling point:
Paraffin > Hexadecane > Pentane > Dimethylpropane > Butane
Answer:
9.2x10²g
Explanation:
Data obtained from the question include the following:
Density = 0.92g/ml
Volume = 1L = 1 x 1000 = 1000mL
Mass =..?
Density is simply defined as the mass of the substance per unit volume of the substance. Mathematically it can be represented as:
Density = Mass /volume.
Mass = Density x volume
Mass = 0.92 x 1000
Mass = 9.2x10²g.
Therefore, 1L of olive will weigh 9.2x10²g.
Number 4 is
-Oxidation occurs at the anode, while reduction occurs at the cathode. Recharging a battery involves the conversion of electrical energy to chemical energy. During recharging, there is movement of electrons from an external power source to the anode, and on the other side electrons are removed from the cathode.
It is a trial aimed to reduce bias during an experiment. An example would be a sugar pill, something that has no real effect so that the results of the true trial can accurately be compared. Its like a control group.