Question

How many molecules of butane are there: 3C4H10

4

10

3

42

Answer 1

C or 3

Step-by-step explanation:

Your first temptation is to say 42.

You get this number by adding 10 and 4 together to get 14

Then multiply by 3 to get the total. So That gives you 3*14 = 42. Wrong answer for this question, although it's tempting. That gives you the number of atoms in 3 molecules of butane.

The answer is 3 and that's a hard answer to get. The 3 represents molecules or mols depending on the question.