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Compare the temperature of your water bath at the time of reflux with the boiling point of your solvent?
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its ?Hvap is 31.6 kJ/mol?
P2.36) A pellet of Zn of mass 31.2 g is dropped into a flask containing dilute H2SO4 at a pressure P = 1.00 bar and temperature T = 300. K. What is the reaction that occurs? Calculate w for the process. Ans. w = -1190 J
Calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to 3.9°C when 4.27 g of the substance is dissolved in the water.
suppose the actual yield is 7.52 of CH3OH. what is the % yield?
If the average human body discharges 925.0g CO2 per day, how many moles of NaOHare needed each day for each person in the spacecraft?( 42.04 mol NaOH)
Using the Nernst Equation, calculate the voltage for a concentration cell with: Cu (s)| 0.01 M Cu2+|| 1.0 M Cu2+| Cu (s)
find the probability of finding an electron in a 10 nm one dimensional box between 0.1 nm and 0.2 nm.
The osmotic pressure of a aqueous solution of a given polymer with mass concentration 0.300 g/mL is 10.0 torr at 298 K. Estimate the molar mass of the polymer.
given that, for H2C2O4(aq), Ka1 = 6.5 x 10-2 and Ka2 = 6.1 x 10-5. Don't forget that Kw = 1 x 10-14.
A sample consisting of various gases contains 3.4 10-6 mole fraction of radon. This gas at a total pressure of 33 atm is shaken with water at 30°C. Calculate the molar concentration of radon in the water.
Standard state is the physical state in which a substance is stable at 1 atm of pressure and a specified temperature
A balloon is filled to a volume of 7.0 102 mL at a temperature of 12.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 multiplied by 102 K. What is the final volume of the balloon?
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