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29.04.2021 •
Chemistry
Question 22
When the equation,
of 02 is:
O2 + __C5H12 --->___CO2 + ___H2O is balanced, the coefficient:
O 5
O 3
O none of the above
04
Solved
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Ответ:
6
Step-by-step explanation:
This is a case of combination since the order does not matter, it only matters that there must be a marble in each one inside, therefore we must apply its formula.
xCn = n! / x! * (n - x)!
n, in this case it would be 4 because we must subtract 2 from the total 6, since there must already be one inside in each display case.
x = 2, since it is the number of showcases.
Replacing:
2C4 = 4! / 2! * (4 - 2)! = 6
Which means that you can in six different ways.