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An unknown compound was decomposed as well as found to be composed of 1.36 mol oxygen, 4.10 mol hydrogen and 2.05 mol carbon. Explain what is the empirical formula of the unknown compound?
All of the carbon atoms in the ring of carbon atoms of the benzene molecule are double bonded to each other. All of the carbon atoms in the ring of carbon atoms of the benzene molecule are single bonded to each other.
a boy wants to prepare an aqueous solution of sucrose with a vapor pressure of 15.0 mm hg at a temperature of 20 degree
.799 g sample of an unknown substance has dissolved in 15.6 g of benzene. The freezing point of the solution was 4.075 C. The freezing point of pure benzene is 5.455 C. For benzene, Kf= 5.065 C/m, and Kb=2.61 C/m. Assume that the solute is a nonel..
A 0.510-g sample of bleach that is 6.15% NaOCl by mass is treated with an excess of KI and then titrated with 0.0638 M Na2S2O3. What volume is required to reach the end point
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
bring 5ml of bromophenol blue to your work station. obtain a P20 Pipetman and record below the digits you see in the window on the side. What volume is the micropipette set to deliver
An ideal gas has a pressure of 4.19 atm, a temperature of 97.83 °C, and has a volumetric flow rate of 72.73 L/min, what is the molar flow rate of the gas
A sample of 1 mol perfect gas molecules with Cp,m equal to 7R is put through the following cycle (a) constant-volume heating to twice its final pressure, (b) reversible adiabatic expansion backs to its initial temperature
A volume of 18.0 contains a mixture of 0.250 , 0.250 , and an unknown quantity of . The temperature of the mixture is 0 , and the total pressure is 1.00 . How many grams of helium are present in the gas mixture
Calculate the vapor pressure of this solution at 25.0 degrees C. At this temperature, the vapor pressure of pure water is 23.8 mmHg.
Using activities, calculate the pH of a solution containing 0.019 M NaOH plus 0.0120 M LiNO3
calculate the specific heat capacity of this sample of mercury if the amount of energy required to heat 2.00 grams hg
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