What mass of CuSO4 would you have to dissolve in 1L of water to make 500 ppm solution of CU^2+?
What mass of CuSO4 would you have to dissolve in 1L of water to make 500...
You now dissolve 0.0673 molal concentration of CuSO4 in water. Calculate the ionic strength of the ions in solution to four decimal places (X.XXXX). You dissolve 0.0673 molal concentration of CuSO4 in water. Calculate the average activity coefficient to four decimal places (X.XXXX).
Suppose you dissolve 1.5 g of KH2PO4 in 1L of water and then adjust the pH of the solution to 6.8. What are the concentrations of the species listed below? A) H3PO4 B) H2PO4- C)HPO4-2 D)PO4-3
What pH would you make the water layer in order to cause both compounds to dissolve in it? Water should have pH 4.5 - 9.5. Water should have pH 4.5 - 7.5. Water should have pH 6.5 - 9.5. Water should have pH 6.5 - 7.5. Part B What pH would you make the water layer in order to cause the acid to dissolve in the water layer and the amine to dissolve in the ether layer? What pH would...
a) In the laboratory you dissolve 12.4 g of lead nitrate in a volumetric flask and add water to a total volume of 500 . mL. What is the molarity of the solution? _____M b)How many grams of Cu(OH)2 will precipitate when excess KOH solution is added to 43.0 mL of 0.579 M CuSO4 solution? CuSO4(aq) + 2KOH(aq) Cu(OH)2(s) + K2SO4(aq)
You make 1L of an aqueous solution that contains 35g of fructose (C6H12O6). A. What is the molarity of fructose in this solution? B. How many litres of water would you have to add to this solution to reduce the molarity you calculated in Part A by a factor of two?
You need to prepare 200ml of a 0.4M solution of copper sulfate (CuSO4). You have 80mL of a 0.5M CuSO4 solution and 100ml of 7.5% (w/v) CuSO4 solution. What volume of 7.5% CuSO4 and water needs to be added to the 80mL of 0.5M CuSO4 solution to make up 200mL of 0.4M CuSO4? Molar mass of CuSO4 = 159.609 g/mol % (weight/volume) means mass (in g) in volume (100mL)
QUESTION 6 You dissolve 9.6 g of CuSO4 in 50.00 mL of water in a coffee cup calorimeter and measure a temperature rise of 10.2 °C. Calculate the enthalpy of dissolution for CuSO4 Report your answer in kl/mol, enter it to one decimal place. If your enthalpy change is positive, do not enter a "+" in front of your answer; if it is negative, however, make sure you include a "-" sign at the beginning of the number.
What mass of benzoic acid, C6H5COOH, would you dissolve in 300.0 mL of water to produce a solution with a pH = 2.75? C6H5COOH+H2O⇌H3O++C6H5COO−Ka=6.3×10−5 Express your answer using two significant figures.
1. Calculate the amount of grams of CuSO4 (nice blue crystals) required to make a 0.340 M solution in a 500 ml volumetric flask. 2. When 4.05 g of CuSO4 are added to a 250 ml volumetric flask, and it is filled half way with distilled water, and gently swirled until the crystals dissolve, and then enough distilled water is added so the meniscus is right at the mark on the neck, what will be the resulting concentration of the...
How many grams of ethanol, CH3CH2OH, would you dissolve in water to make 2.75 L of vodka (which is an aqueous solution that is 6.86 M ethanol)? Using the density of ethanol (0.789 g/mL), calculate the volumes of ethanol and water you need to make 2.75 L of vodka. Please show all work. Thank you!