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Chapter 13 Test What is the molarity of a methanol solution that contains 25 g of methanol in 3.5L of a solution? The molar mass of methanol is 32g/mol. mol=square (Write answer rounded to 2 decimal places and do not put any letters in.) molarity = square (Write answer rounded to 2 decimal places and do not put any letters in.) POSSIBLE POINTS: 1
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Omarveterano · Tutor durante 11 años
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To find the molarity of the methanol solution, we need to follow these steps:<br /><br />1. Calculate the number of moles of methanol.<br />2. Calculate the molarity of the solution.<br /><br />Step 1: Calculate the number of moles of methanol.<br />Given:<br />Mass of methanol = 25 g<br />Molar mass of methanol = 32 g/mol<br /><br />Number of moles of methanol = Mass of methanol / Molar mass of methanol<br />Number of moles of methanol = 25 g / 32 g/mol<br />Number of moles of methanol = 0.78125 mol<br /><br />Step 2: Calculate the molarity of the solution.<br />Given:<br />Volume of the solution = 3.5 L<br /><br />Molarity = Number of moles of solute / Volume of the solution in liters<br />Molarity = 0.78125 mol / 3.5 L<br />Molarity = 0.22464 M<br /><br />Rounded to 2 decimal places, the molarity methanol solution is 0.22 M.
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