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a liquid in a sealed container with a moveable piston lid is vaporised at its boiling point. predict the signs of w, q, ?H, ?S, ?Ssurr and ?G at this point.
In the pie chart graphs the percent natural abundance fo ci-35 (atomic mass 34.969) is represented as grean, and the percent natural abundance for cl-37 atomic mass 36.966 amu is represented as yellow.
if the molar enthalpy of water is 6.009 kjmol how much energy is needed for 4.5 moles of ice to melt at
a 2.70 g sample of solid ch33nhcl s is dissolved in 446 ml of water in a coffee cup calorimeter. once all of the
What is the vapor pressure of each of the solution components in the mixture? What is the total pressure above the solution?
The mass of the carbon dioxide was 30.50 g, and the mass of the water was 14.98 g. What was the empirical formula of the hydrocarbon
If you fill the larger tank with oxygen to a pressure of 135 , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Why do immunoglobulins have both "constant" and "variable" regions? explain how this aspect of the structure is important for the function of each region.
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?
The volume of a sample of gas (2.49 g) was 752 mL at 1.98 atm and 62 degrees Celsius. the gas is? SO2, SO3, NH3, NO2, or Ne
There were two acid solutions: 0.1 M HCl and 0.1 M H2SO4 , 250 mL each in two identical volumetric flasks prepared by a lab technician. Unfortunately, she forgot to label them and there were no more concentrated acids left in the lab. She found 1L..
The element is so highly unstable that no observations of its properties have been possible. Based on its position in the periodic table, propose two different reasonable valence electron configurations for this element.
Why does the 13C NMR show five different types of carbon atoms when the molecular formula indicates the compound contains seven carbon atoms
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