What do you mean by ‘which of the following’? Without that I am not able to answer the question
The formula of determining the molarity is:
molarity = -(1)
Volume of solution = (given)
Since, 1 mL = 0.001 L
Therefore, volume of the solution = 0.22 L
Molarity = 0.194 M (given)
Substituting the values in formula (1)
Now, number of moles = -(2)
Molar mass of =
Substituting the value of number of moles and molar mass of in equation -(2)
Hence, the mass in grams of potassium permanganate the chemist has added to the flask is .
Condensation goes with A.
Evaporation goes with C.
Sublimation goes with B.
Freezing goes with D.
The empirical formula of the compound containing 0.64 g of copper, 0.32 g of sulphur and 0.64 g of oxygen is CuSO₄
From the question given above, the following data were obtained:
Mass of Cu = 0.64 g
Mass S = 0.32 g
Mass of O = 0.64 g
<h3>Empirical formula =? </h3>
The empirical formula of the compound can be obtained as follow:
Cu = 0.64 g
S= 0.32 g
O = 0.64 g
Divide by their molar mass
Cu = 0.64 / 63.5 = 0.01
S= 0.32 / 32 = 0.01
O = 0.64 / 16 = 0.04
Divide by the smallest
Cu = 0.01 / 0.01 = 1
S= 0.01 / 0.01 = 1
O = 0.04 / 0.01 = 4
Therefore, the empirical formula of the compound is CuSO₄
Learn more: brainly.com/question/13086832