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Nady [450]
3 years ago
7

In the equation c2h4 + 3o2 = ? co2 + 2h2o, how many co2 molecules are needed to balance the equation?

Chemistry
1 answer:
AVprozaik [17]3 years ago
8 0
C2H4 +3O2 =?CO2 +2H2O
The number  of CO2  molecule s that are needed to balance the  equation are

two (2)

that is  C2H4 +3O2 = 2CO2+ 2H2O

1 molecule of   ethane (C2H4)  is burned in presence of oxygen to form 2 molecules of carbon(iv) oxide (CO20 and 2 molecules of water(H2O)
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What is the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen
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Carbon(C):
number of moles= mass/molar mass(Mr)
=65.5/12
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Hydrogen(H):
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So,
C= 5.5/1.8 = 3
H= 5.5/1.8 = 3
O= 1.8/1.8 = 1

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