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Mass of a barrel of crude oil (159l) (139 kg) is 2 x Mass of a domestic washing machine (70 kg)
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Pop. of Rio de Janeiro, Brazil (6.43 million people)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.