How many grams of KNO₃ are needed to make 250.mL of a solution that is 0.135 M? A)1.71 g B)0.341 g C)3.41 g D)6.82 g

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Quizplus · Accepted Answer

To find the grams of KNO3 needed, use the formula: moles = molarity × volume (in liters). First, convert 250 mL to liters (0.250 L). Then, calculate moles: 0.135 M × 0.250 L = 0.03375 moles. The molar mass of KNO3 is approximately 101.1 g/mol. Multiply the moles by the molar mass: 0.03375 moles × 101.1 g/mol = 3.41 g.

How Many Grams of KNO3 Are Needed to Make 250

How Many Grams of KNO₃ Are Needed to Make 250