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------------------------------------------------ How many millimoles (mmol) of 4-aminophenol are contained in a 1.57-gram sample of this compound? Enter your response to the nearest 0.1 mmol.

Answer :

Using the molar mass of 4-aminophenol, we can calculate that a 1.57 g sample of this compound contains 14.4 mmol.

To calculate the number of moles (n) in the sample (m = 1.57 g), we have to use the molar mass (M) of 4-aminophenol. We can calculate the molar mass of the compound using its molecular formula - C₆H₇NO

We use the relative atomic masses for each element present in the compound (12 for carbon, 1 for hydrogen, 14 for nitrogen, and 16 for oxygen):

M = (6 * 12 + 7 * 1 + 14 + 16) g/mol

M = 109 g/mol

We can now calculate the number of moles in the sample:

n = m/M

n = 1.57 g / 109 g/mol

n = 0.0144 mol

n = 14.4 mmol

You can learn more about molar mass here:

brainly.com/question/12127540

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