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What two steps in the reaction are accelerated by the presence of strong acid, and what function does the acid play in each of these steps?
An auto bumper is coated with a layer of chromium, 0.017 cm thick. The bumper has a surface area of 3.43 x 104 cm2. The density of chromium metal is 7.19 g/cm3. How many atoms of chromium are used i
A sample of chlorine, which has an average atomic mass of 35.86, consists of two isotopes with mass of 35 and 37. What is the percent (to 0.1%) abundance of the 37 isotope?
A solution is prepared by dissolving 15.0g of nh3 in 250g of water. The density of resulting solution is 0.974g/ml. Calculate the molarity of nh3 in the solution described above
Which 1.0 M acid solution has the largest concentration of hydronium [h3O+]?
Find the standard potential of the half-reaction. Notice the relation between first 2 equations and the desired equation. Convert Ksp and Eo to ΔGo.
sample of sodium reacts completely with 0.142kg. of chlorine, forming 234 g. of sodium chloride. what mass of sodium reacted?
Actually, the resulting mixture could be safely disposed of by pouring it into the drain and diluting with a large amount of running water. describe the harzards of each of the solutions. Explain wh
a 1.00L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate pH of the solution after the addition of 100.0mL of 1.00M HCl. Ka for HF is 3.5x10^-4.
What type of intermolecular forces accounts for Kr, atomica weight 84, boils at 120.9k
When a sample of aqueous hydrochloric acid was neutralized with aqueous sodium hydroxide in a calorimeter, the temperature of 100.0 g of water surrounding the reaction increased from 25.0°C to 3
Salicylic acid reacts with acetic anhydride to produce acetylsalicylic acid and acetic acid (1:1:1:1). Write the balanced chemical reaction using structural formulas.
Calculate the energy change for the reaction given the following ionization (IE) energy and electron (EA) affinity values. K: IE- 419kJ/mol and EA-48 Kj/mol and Br: IE-1,010 kJ/mol and EA 295 kJ/mo
Write a balanced molecular equation for MnSO4xH2O reacting with H2C2O4 and water to form MnC2O4x3H2O. What will be the other products of the reaction?
Calculate the final concentration of a sodium hydroxide solution prepared by adding 10.00mL of 5.325M sodium hydroxide stock solution into a 250.00mL volumetric flask and then filling to the mark wi
What is the boiling point of cyclohexane at 600 mmHg
What are the absolute and percent uncertainties in the perimeter, area and volume of the tetrahedron?
Predict the sign of delta S for each of the following reactions:
If the pressure exerted on the gas in a weather balloon dereases from 1.05 atm to 0.573 atm as it rises, by what factor will the volume of the gas in the balloon increase as it rises?
Calculate the amount of heat required to completely sublime 88.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.
2.00 x10^2 mL of .744 M HCl is mixed with 2.00 x 10^2 mL of .372 M Ba(OH)2. how many moles of water are produced in the reaction
Using the values for the mass of p-dichlorobenzene, its molar mass (147.01 g/mol), and the mass of cyclohexane solvent that you used, calculate and enter the molality of the p-dichlorobenzene soluti
if a 210 mg piece of gold (density=19.32 b/cm^3) is hammered into a sheep measuring 2.3*10 ft. what is the average thickness of the sheet in meters?
Calculate the total pressure (in atm) of a mixture of 0.0270 mol of helium, He, and 0.0200 mol of oxygen, O2, in a 4-L flask at 20°C. Assume ideal gas behavior.