Calculate the Number of Moles in a Propane Tank

What is the number of moles if 1/2 of the gas is used in a propane tank containing 55l with 2.46 moles of C3 gas (propane)?

a) 1.23 moles

b) 2.46 moles

c) 3.69 moles

Answer:

The number of moles if 1/2 of the gas is used is 1.23 moles.

When dealing with a propane tank containing 55l and initially having 2.46 moles of C3 gas (propane), we can calculate the number of moles if 1/2 of the gas is used.

Using the formula V1/n1 = V2/n2, where V1 is the initial volume (55 L) and n1 is the initial number of moles (2.46 moles), we can find n2 when 1/2 of the gas is used, leaving 27.5 L in the tank.

By substituting the values into the formula, we get n2 = (2.46 * 27.5) / 55 = 1.23 moles. Therefore, the number of moles if 1/2 of the gas is used is 1.23 moles.

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