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Calculate the grams of ethane present in a sample containing 0.2643 moles if the molar mass of ethane is 30.067 g/mol.

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Final answer:

The mass of ethane in the sample is 7.946 grams, calculated by multiplying the given moles (0.2643) by the molar mass of ethane (30.067 g/mol).

Step-by-step explanation:

To calculate the grams of ethane present in a sample containing 0.2643 moles when the molar mass of ethane is 30.067 g/mol, the following equation should be used:

Mass (g) = moles × molar mass (g/mol)

Substitute the given values into the equation:

Mass (g) = 0.2643 moles × 30.067 g/mol

Mass (g) = 7.946 g (grams of ethane)

This result represents the mass of ethane in the sample based on the moles provided and the molar mass of ethane.

User Joaerl
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