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Determine the vapour pressure of a solution at 55C that contains 34.2 g NaCl in 375 ml of water. The vapour pressure of pure water at 55C is 118.1 torr. Assume a solution density of 1.00 g/ml. Final answer must be in torr.
How many kJ of heat are required to produce 13.7g NO2, by 2NO2+ O2 --> 2NO2. the heat of reaction is 113.04
calculate the number of NaCl formula units formed when 176 Na atoms and 98 Cl2 molecules react?
If a sample of barium contains 2.3 x 1023 atoms of barium, how many grams of barium are in the sample?
showing how the Gibbs energy (G) changes with increasing pressure at constant entropy? Related equation dT/dP at constant S = V/ Cp
A 500mL solution contains 1.68g NH3 and 4.05g (NH4)2SO4. How many mL of 12M HCl is needed to change the pH to 9.00?
Calculate the change in entropy of a system (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
What is the pressure (in atm) exerted by a 2.00 mole sample of gas that occupies 2.50 L at 307.15K? The value of R = 0.0821 L atm mol - 1 K - 1 .
If the water initially has a temperature of 26 0C, how many kilojoules of heat must be removed to cool and freeze the water at 0 0C?
The nitro group needs to be taken off as well. I can't seem to find any reference materials on what reagrents can be used. Can you please advise?
Write a series of nuclear equations to represent the bombardment of Al-27 with a neutron to form a product that then undergoes an alpha decay followed by a beta decay
A sample of blood serum is teasted and found to contain testosterone at a concentration of 766 ng/mL. How many grams of testosterone are present in 30.5 mL of this blood? What is the stoichiometric coefficient for oxygen
Calculate the concentrations of the protoneated and unprotonated forms of bromothymol blue in 100 mL of a pH 8.1 buffer solution to which 1.0 mL of 0.005 M solution of bromothymol blue in 80% wate/20%ethanol has been added.
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