dsaefong00
03.12.2020 •
Chemistry
How many molecules of oxygen is used when 15 grams of CH4 is burned in open air?
Balanced equation: CH4 + O2 -> CO2 + 2 H20
O 4.51x1023
O 5.63x1 choy
O 6.11x1023
O 8.72x1023
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Ответ:
Ответ:
You just add 2x with 4x. That is, remove the parentheses and add up.
4x + (2x+y) -8 =
4x + 2x + y - 8 =
6x + y -8