1st attempt See Periodic Table If the absorbance of a solution of copper(II)ion decreases by 17.00%...
If the absorbance of a solution of copper(II) ion decreases by 21.00% upon dilution, what volume of water was added to 20.0 mL of a 20 M solution of Cu2+(ag)?
If the absorbance of a solution of copper(II) ion decreases by 22.00% upon dilution, what volume of water was added to 20.0 mL of a 1.20 M solution of Cu2+(aq)?
1st attempt See Periodic Table See Hint A 1.00 L solution contains 2.00x104 M Cu(NO3)2 and 2.500x10 M ethylenediamine (en). The Ky for Cu(en)22 is 1.00x1020 What is the concentration of Cu2(aq) in the solution?
1st attempt See Periodic Table The (OH-] in an aqueous solution is 4.5x106 M. Find the [H'1.
Question (2 points) See page 22 1st attempt See Periodic Table See Hint If all of the energy from burning 318.0 g of propane (A Hcomb.C3H8 --2220 kJ/mol) is used to heat water, how many liters of water can be heated from 20.0°C to 100.0°C? (Assume that the density of water is 1.00 g/ml) L of water < 07/11 D40 ENG 0 OF 11 QUESTIONS COMPLETED e here to search
V 1st attempt . See Periodic Table D See Hint Suppose an oven's radiation wavelength is 0.125 m. A container with 150.00 g of water was placed in the oven, and the temperature of the water rose from 20.0°C to 80.0°C. How many photons of this microwave radiation were required to heat the water? (Assume that all the energy from the radiation was used to raise the temperature of the water.) photons
1st attempt See Periodic Table See Hint A sample of gas trapped by a moveable piston has a volume of 57.0L and a pressure of 2.70 atm at 273 K. If the volume of the gas decreases to 18.0L as the temperature is increased to 328 K, what is the new pressure of the gas? atm
c. Complete the table to summarize your results for the preparation of copper(II) sulfate solutions. volume of the Concentrated Solution (mL) Volume of Water (ml) Table 12-3. Preparation of copper (II) sulfate solutions. Amount of Volume of the Concentration (M) CuSO. 5H,0 Final Solution la (ml) 0.50 2.4961 0.20 20 0.10 0.05 20 20 12 10 10 5. Show the measured values of %T for each of the made Cu2+ solutions along with the corresponding absorbance for each. Table 12-4....
1st attempt Feedback See Periodic Table See Hint In a 8.00 M nitrous acid (HNO.) solution, calculate (H'). Nitrous acid is a weak acid with K, 4.00 x 10" at 25°C M
Iul See Periodic Table See Hint Calculate the equilibrium concentration of Ag (aq) in a solution that is initially 0.120 M AgNO, and 0.840 MNH3, and in which the following reaction takes place: Ag (aq) + 2NH, (aq) (NH)2(aq) (K - 1.70.10) M Ag One millimole of Ni(NO3)2 dissolves in 270.0 mL of a solution that is 0.500 M in ammonia The formation constant of Ni(NH3)2 is 5,5x10% 1st attempt Part 1 (1 point) i See Periodic Table See Hint...