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A layer of copper welded to the bottom of a skillet weighs 159 g. How much heat (in J) is needed to raise the temperature of the copper layer from 30.0°C to 280.0°C? The specific heat capacity (c) of Cu is 0.387 J/g⋅
K.
Explain the crystal field splitting you would expect for the f-orbital in octahedal geometry, explain how could the splitting change if the octahedral complex lost a ligand to become a square pyramind,
Calculate a lattice energy for (in kilojoules per mole) using the following information.
We add excess Na2CrO4 solution to 17.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams.
Problem- What molarity of propanoic acid, C3H6O2 (Ka = 1.3 x 10-5), is required to produce an aqueous solution with pH = 2.40?
If the mass of water surrounding the calorimeter was exactly 1000 g and the heat capacity of the bomb calorimeter without the water was 1.75 kJ/degrees Celsius, calculate the molar heat of the combustion of methanol
Two evacuated bulbs of equal volume are connected by a tube of negligible volume. One bulb is placed in a 200K isothermal bath and the other in a 300K bath, and then 1.00 mole of an ideal gas is injected into the system. Find the final number of m..
A 100.0-mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. What is the pH of the solution after 100.00 mL of acid have been added to the ammonia solution?Kb = 1.8 × 10-5.
a spectrophotometer was calibrated with a 6.1times10-4 m in cu cu-neocuproine solution. this calibration was carried
When concentrated hydrochloric acid is added to a solution containing Cu2+(aq), the colour changes to a pale yellow-green.No gas is evolved. No such colour change occurs when concentrated sulfuric acid is added toCu2+(aq).
oxygen gas is collected over water at 21 degrees C and an atmosperic pressure of 748 mm Hg. What is the partial pressure of oxygen gas in the mixture
a balloon is filled to a volume of 7.00x102 ml at a temperature of 20.0 degrees c. the balloon is then cooled at
Describe the effect that the following procedural changes would have on the percent recovery of acetanilide. Rather than adding 0.5ml portions of boiling solvent to acetanilide, student added 5ml portions
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