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The osmotic pressure of a solution containing 2.04 g of an unknown compound dissolved in 175 mL of solution at 25 C is 2.13 atm. The combustion of 22.08 g of the unknown compound produced 36.26 g CO2 and 14.85 g H2O.
What is the molecular formula of the compound (which contains only carbon, hydrogen, and oxygen)?
Arsine (AsH3) has a vapor pressure is 35 Torr at -111.95?C and 253 Torr at -83.6 ?C. What is the normal boiling point of arsine.
The flask was then shaken until the solution was uniform. A 60.0ml- sample of this glucose solution was diluted to 0.500 L . How many grams of glucose are in 100.ml of the final solution?
Use the Boltzmann equation to calculate the excited-state and ground-state population ratio for HCl (g*/g0=1) at room temperature (25 oC). The frequency of the absorption from the ground to the excited state is 2885 cm-1. What is the population ra..
What is the pH of a buffer solution that is 0.255 M in hypochlorous acid (HClO) and 0.333 M in sodium hypochlorite? The Kb of hypochlorous acid is 2.63 x 10 ^-7. ( Use ICE and please show work)
A gaseous mixture of O2 and Kr has a density of 1.102 g/L at 420 torr and 300. K. What is the mole percent O2 in the mixture?
What is the molar mass of the unknown compound if the solution has a freezing point of -5 oC?
1.664 g of a solid white acid are dissolved in water and completely neutralized by the addition of 45.37 mL of 0.580 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
Chemistry - Other explained in this solution, If world energy consumption continues to rise at the present rate of 2.4%, how long will it take to double (expressed in years)?
Calcium reacts with fluorine gas to produce calcium fluoride. How many moles of Ca will react with 1.0 moles of F2
a solution is prepared by mixing 50.0 ml of 0.50 m pbno32 with 50.0 ml of 1.7 m kcl. calculate the concentrations of
How many moles of gas are there in a gas-filled balloon, which has a volume of 67.0 L at a pressure of 742 mmHg and a temperature of 25.0°C?
One mole of an ideal gas with a volume of 1.3 L and a pressure of 6.9 atm is allowed to expand isothermally into an evacuated bulb to give it a total volume of 3.1 L. Calculate w and q. Also, calculate qrev for this change of state.
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