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The pressure of gas in a 600.0 ml cylinder is 65.0 mmHg. what volume must it be compressed to increase the pressure to 385mmHg?
A solution containing 0.2 g/mL of a pure R enantiomer in a 1 dm polarimeter rotates plane polarized light by +3?. What is the specific rotation of the R isomer. What will be the specific rotation of its S isomer.
If 28.1713 g of unknown was added to 859.6 g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
A solution of HNO3 is standardized by reaction with pure sodium carbonate: 2H+ + Na2CO3 ---> 2Na+ + H2O + CO2 A volume of 23.66 ± 0.04 mL of HNO3 solution was required for complete reaction with 0.814 ± 0.0009 g of Na2CO3
What is the effect on the calculated concentration of the standard solution if the trials of the pure KHP samples are consistently over-titrated to a deeper magenta color?
A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content of 51.0g of O2 and 32.5g of He. Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 15 deg C.
Hydrogenation reactions are used to add hydrogen across double bonds in hydrocarbons and other organic compounds. Use average bond energies to calculate DELTA Hrxn for the following hydrogenation reaction:
Given that 3.9 moles of carbon monoxide gas are present in a container of volume 14.5 L, what is the pressure of the gas (in atm) if the temperature is 89 °C
Draw 3 different reaction pathways for meta, ortho, and para substitution of a halogen (e.g. Br2 in FeBr3) onto nitro benzene. Each pathway should have all resonance structures.
Why is it particularly important in the experiment "kinetic an thermodynamic control of a reaction" that the semicarbazones be dry before their melting points are determined
A physiological saline solution contains 154mEq/L each of Na+ and Cl-. How many moles each of Na+ and Cl- are in 0.600L of the saline solution?
What is the wavelength, in nanometers, of the light emitted when the electron in a hydrogen atom drops from the energy level n_i = 12 to n_f = 5
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179 g/mL , should be used to make 5.30L of an HCL solution with a of pH 1.8
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