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What is the concentration of a solution (in M) which contains 59.3 g of sucrose (C12H22O11) in 673 mL of solution
A certain quantity of a gas occupies 61.3 mL at 68C. If the pressure remains constant, what would the volume of the gas be at 17C?
At an altitude of 30 km, the temperature in the stratosphere is approx. -45.3 degrees F. What is the average kinetic energy of a single CF2Cl2 molecule at this temperature?
Historically, the solid residue that is left after the methylene chloride solution is evaporated has a lower melting point that its literature value, due to impurities. Explain what impurities are present and why.
Tell how infrared spectrometry can be used to differentiate the following compounds. In each case, indicated the signifcant IR bands that will be observed and their approximate wave numbers.
The air is cooled as the water evaporates. How much water must be evaporated to cool the air in a room of dimensions 4.0 m x 5.0 m x 3.0 m by 20. C? Assume that the enthalpy of vaporization of water is the same as it is at 25 c.
When 0.800 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 13C is observed.Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL.
Heat realsed by combustion of ethyl ether, 1. In earlier times, ethyl ether was commonly used as an anesthetic. It is, however, highly flammable. When 5.0 mL of ethyl ether C4H10 (l), (d=0.714 g/mL) is burned in a bomb calorimeter
A weather balloon at Earth's surface has a volume of 4 L at 285 K and 791 mmHg. If the balloon is released and the volume reaches 4.19 L at 711 mmHg.
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
What is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants?
must be dissolved in 15.0g of camphor to lower its freezing point by 2 degrees celsius? constant k of camphor = 37.7 (*C x kg)/mol
A white precipitate formed. This mixture was centrifuged and separated, and the clear solution was then treated with 1 M Na2Co3. No Preceipitate formed. Which metal ions were present in your unknown? Which metal ions were absent
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