Question

A chemist adds 85.0 mL of a 0.51M copper(Il) sulfate (CusO4) solution to a reaction flask. Calculate the mass in grams of copper(II) sulfate the chemist has

added to the flask. Be sure your answer has the correct number of significant digits.

Answer 1

Step-by-step explanation:

To calculate the mass of copper(II) sulfate added to the flask, we need to use the formula:

mass = volume x concentration x molar mass

where:

volume = 85.0 mL = 0.0850 L (converted to liters)

concentration = 0.51 M

molar mass of CuSO4 = 159.61 g/mol (from the periodic table)

Substituting the values into the formula, we get:

mass = 0.0850 L x 0.51 mol/L x 159.61 g/mol

mass = 6.68 g

Therefore, the chemist has added 6.68 grams of copper(II) sulfate to the flask.