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What is the concentration of H ion in 0.031 M HCLO4? what is the pH of the solution? what is the OH in the solution? by how much does the pH change if concentration of H is doubled?
what is the structure os glycylserine and
Estimate the time it will take to flush 99% of the discharge from the lake. Immediately after the spill, the lake, completely mixed, has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the ..
Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the tempreture and pressure were 20.0 degrees C and 758 mmHg, respectively.
A suspension of vanillin (2.5838 g, 16.98 mmol) and sodium hydroxide (0.022 g, 22 mL, 1M) was coolied in an ice-water bath before adding sodium borohydride (0.41s g, 10.89 mmol) while swirling the mixture. After addition of the sodium borohydride ..
A piece of tin weighing 85.251 g is placed into 41.1cm3 of ethyl alcohol (D=0.798) in a graduated cylinder and it sinks to the bottom . The alcohol rises to 52.8cm3
What total volume of ozone measured at a pressure of 29.0mmHg and a temperature of 234k can be destroyed when all of the chlorine from 16.5g of CF3Cl goes through ten cycles of the above reactions
determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with water according to the
Calculate the equilibrium constant for the reaction below at 25 degrees C. Co(s) + 2 Cr^ 3+(aq) -> Co^2+(aq) + 2 Cr^2+ (aq) given the following thermodynamic information
the density of the compound as a gas was found to be 4.02g/L at 127 degrees C and 256 torr. What are the empirical and molecular formulas of the compound
The purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate the number of kilograms of hydrogen that pass per hour (in kg/h) through a 4.7 mm thick sheet of palladium having an area of 0.25 m2 at 500°C.
the osmotic pressure at 20.0 degrees C is 3.62x 10^-3 atm. What is the molar mass of the protein hemoglobin?
compressed gas cylinder contains 1.00 x 103 g of argon gas. The pressure inside the cylinder is 2050 psi at a temperature of 18oC. How much gas remains in the cylinder if the pressure is decreased to 650psi at a temperature of 26oC?
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