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The left-hand electrode makes use of the complete oxidation of methane to carbon dioxide and water; the right hand electrode makes use of the partial oxidation of methane to carbon monoxide and wate
What is the abbreviated electron configuration for the +3 ion of Chromium? I know the lectron configuration for chromiumbut I'm lost with the ion. Any help will be appreciated
What is the composition of the bubbles observed when the crudemethyl benzoate product is washed with sodium bicarbonate? Hint: consider the acidity of the solution (some HCl will still be present) a
What concentrations of acetic acid and sodium acetate are required to prepare a buffer solution with pH = 4.60? Ka =1.8 x 10-5 for acetic acid.
Hydrogen peroxide was catalytically decomoposed and 75.3 mL of oxygen gas was collected over water at 25 degrees celsius and 742torr. What mass of oxygen was collected? (Pwater =24 torr at 25 d
Mechanical Advantage If lifting the piano straight up would require 1700 N of force, what is the mechanical advantage of the ram
If Ka is 1.85E-5 for acetic acid, calculate the pH at one half the equivalence point and at the equivalence point for a titration of 50mL of 0.100M acetic acid with 0.100M NaOH.
The formation constant Kf for the complexion Zn(OH)42- is 2.8 1015. What is the concentration of zinc ion,Zn2+, in a solution that is initially 0.50 M inZn(OH)42-?
7- Magnesium sulfate, MgSO4, is added to 463 mL of 0.010 Msodium hydroxide, NaOH, until a precipitate just forms. How many grams of magnesium sulfate were added?
What are the equilibrium partial pressures of N2O4 andNO2 when 1.000 atm of N2O4 is introduced into a 500.0 mL containerat room temperature?
Calculate the mass in g of the PbI2(s)(yellow precipitate) that is formed afterreacting with 1mL of 0.1M KI solution + 1mL of 0.06MPb(NO3)2 solution and then, add another 1mLof 0.1M KI solution.
When .514g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.8 degrees C to 29.4degrees C.
A method to increase oil production in areas drilled through limestone deposits is to use hydrochloric acid to increase drainage channels through the stone.
The pKa values for H2SeO3 at25o C are 2.64 and 8.27. Write the base-hydrolysis equilibrium equations forSeO32-(aq) andHSeO3-(aq)ions, and calculate the equilibrium constant values
Calculate the pH of a solution preparedby mixing equal volumes of 20.0 M methylamine (CH3NH2 Kb = 3.7 *10^-4) and 0.60 M CH3NH3Cl.
14.0mg of a certain protein was dissolved in water to make asolution of 2.50mL at 28.0o C. If the osmotic pressureis 1.30torr, what is the molecular mass of the protein?
A pitcher hurls a 0.25kg ball around a vertical circular path of radius 0.6 m, applying a tangential force of 30N, before releasing it at the bottom of the circle (underhand pitch).
Why do chemists prefer to read/record the absorbance, rather than the percent transmittance, of light (electromagnetic radiation) when analyzing a sample having a visible color?
What would be the freezing point of the solution if 175 g of sodium chloride (NaCl) is added to 1.00 kg of water? Kf of water is1.86 ºC·kg/mol.
A 1.526 g sample of a polymer dissolved in 1.00 L of a benzene solution at 22°C has an osmotic pressure of 4.52 x 10-2 atm. What is the molar mass of the polymer?
When .514g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.8 degrees C to 29.4degrees C. Find delta E(rxn) for the combustion of biphenylin kJ/mol.
A 25.5g Al block is warmed to 65.4 degrees C and plunged into an insulated beaker containing 55.2g water initially @22.2 degrees C. The aluminum and water are allowed to come to thermal equilibrium.
One tablespoon of peanut butter has a mass of 16 g. It is combusted in a calorimeter whose heat capacity is 120.0kJ/C. The temperature of the calorimeter rises from 22.2 degrees C to 25.4 degrees C.
How many grams of table salt would have to dissolved in 130.0 g ofwater to lower the freezing point by 1.10 degrees celsius?kf = 1.86 K-kg/mol for water.
If hydrolysisof a protein is continued until the biuret test becomes negative,what can be concluded regarding the extent of hydrolysis?