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Maple syrup is habitually a solution of sucrose in water. Compute the molality of the syrup if a sample freezes at -.50 degrees Celsius, presuming the solute is pure sucrose. (Kf = 1.86 degrees Celsius/m)
A sample of methane gas (CH4) at 18.8 oC is heated. The pressure increases from 1.78 atm to 2.46 atm, and the volume of the sample changes from 4.09 L to 1.89 L.
A 15.0 L flask contains 2.00 moles of N2 and 6.00 moles of H2 at 728 oC. A. Before any reaction takes place, what is the partial pressure of N2 in the flask?
A typical serving of cheddar cheese contains 176 mg of sodium. How many moles of sodium are contained in this amount of cheddar cheese
suppose that the microwave radiation has a wavelength of 12 . how many photons are required to heat 275 of coffee from
In a gas mixture, the partial pressures are nitrogen 420 torr , oxygen 125 torr , and helium 245 torr. What is the total pressure (torr) exerted by the gas mixture?
A plot of ln[AV] versus t (s) gives a straight line with a slope of -0.32s^-1. What is the value of the rate constant (k) for this reaction?
When temperature and pressure confitions are not too severe, equations of state me be integrated explicitly to determine the fugacity of a gas. Derive an expression for ln(f/p) for a van der Waal's gas.
Multiple choice questions in free energy change and What is the free energy change in kJ/mole?
CaCN2 + 3 H2O → CaCO3 + 2 NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
When light of frequency 6.88×1015 s-1 shines on the surface of a metal, electrons are ejected with a maximum kinetic energy of 3.40×10-19 J. Calculate the wavelength of this light.
Determine how much concentrated solution can you take to form 1.15 Litres of 0.105M Nitric acid by mixing with H 2 O?
The neutrons interact with with 6Li to produce tritons (nuclei of 3H), which, in turn, interact with the oxygen to produce 18F. What are the two nuclear reactions?
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