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Rama09 [41]
3 years ago
8

Please help for brainliest Don’t skip and don’t answer if u don’t know.

Chemistry
1 answer:
Rainbow [258]3 years ago
8 0

Answer:

burning wood be a chemical change because it wouldn’t be able to go back to its original form. A physical change would be a broken pencil. The pencil is still a pencil, it’s just a physical change.But if it were burned it would be a chemical change.

Explanation:

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How many moles of ethylene (C2H4) can react with 12.9 liters of oxygen gas at 1.2 atmospheres and 297 Kelvin?
Inga [223]
So in this equation, 3 oxygen will react with 1 ethylene.
then, you convert from 12.9 Liters to moles.
1 mole = 22.4 Liters of gas.
x moles = 12.9 liters

So, 22.4x = 12.9, which means that x = 12.9/22.4, and you get about 0.6, then you divide by 3 because you have 3 Oxygen, and you get about 0.2.

So, 0.2 moles of ethylene C2H4 can react with 12.9 liters of Oxygen Gas.

Hope this Helps :)


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