Which of the following hydrocarbons will most likely be found around cows? ethane methane octane decane

Option (b) is the correct answer.

Explanation:

Cows are responsible for producing cow dung which is also known as a source of green energy because it produces bio-gas.

Therefore, it is used as a fertilizer because cow dung produces methane gas and this gas behaves as a stable and renewable source of electricity which is inexpensive.

Therefore, we can conclude that methane is the hydrocarbon that will most likely be found around cows.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3