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VMariaS [17]
4 years ago
15

The unit cm3 is used to express .?

Chemistry
2 answers:
Naddika [18.5K]4 years ago
4 0
The unit cm3 is used to express a cube using cm
Mamont248 [21]4 years ago
4 0
Volume obviously. volume is cm cubed

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Ignore the answer I have selected but please help!! Ty in advance, also please explain
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Which color of visible light has the highest energy?
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Why do atoms go through radioactive decay?
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What is the relationship between the reactant and yield
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7 0
3 years ago
What volume of oxygen at STP is requieres for the complete combustion of 100.50 mL of C2H2
malfutka [58]

The volume of oxygen at STP required would be 252.0 mL.

<h3>Stoichiometic problem</h3>

The equation for the complete combustion of C2H2 is as below:

2C_2H_2 + 5O_2 --- > 4CO_2 + 2H_2O

The mole ratio of C2H2 to O2 is 2:5.

1 mole of a gas at STP is 22.4 L.

At STP, 100.50 mL of C2H2 will be:

                 100.50 x 1/22400 = 0.0045 mole

Equivalent mole of O2 according to the balanced equation = 5/2 x 0.0045 = 0.01125 moles

0.01125 moles of O2 at STP = 0.01125 x 22400 = 252.0 mL

Thus, 252.0 mL of O2 gas will be required at STP.

More on stoichiometric problems can be found here: brainly.com/question/14465605

#SPJ1

7 0
2 years ago
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