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What is the mass of three moles of ethane?

Answer 1

Olivia Anton

#"Ethane, "H_3C-CH_3# has a molar mass of #30.07*g*mol^-1#.

And thus the mass of #3# #mol# #=# #3*cancel(mol)xx30.07*g*cancel(mol^-1)# #=# #??*g#

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Answer 2

Cameron Andrews

The molecular formula for ethane is C2H6, and the atomic masses of the carbon (C) and hydrogen (H) in one molecule of ethane are respectively approximately 12.01 and 1.008 g/mol. Thus, the molar mass of ethane (C2H6) is: 2(C) + 6(H) = (2 * 12.01 g/mol) + (6 * 1.008 g/mol) = 24.02 g/mol + 6.048 g/mol = 30.068 g/mol. Now, to find the mass of three moles of ethane, we need to know the molar mass of ethane, which is calculated by adding the atomic masses of all the atoms in one molecule of ethane. This results in an approximate mass of 90.204 grams.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.