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An oxygen gas sample measures .3 L at !5 degrees Celsius. At what Celsius temperature does this oxygen measure .25 L if thepressureis kept constant?
The mixture is added to 130g of water. If the solution described in the introduction is cooled to 0 degrees celsius, what mass of KNO3 should be cystallize
The dipole moment and the normal boiling point of acetaldehyde (CH3CHO) are 2.7 D and 293 K, respectively. The dipole moment and the normal boiling point of n-octane (C8H18) are 0 D and 298 K.
C2H4(g) + H2O(g) C2H5OH(g) 1 mol C2H4, 1 mol H2O at 355K and 1 bar. Using equilibrium constant approach, calculate the equilibrium extent of reaction and the mole fractions
Freons are controversial because of the damage they do to the ozone layer in the stratosphere. A 4.33-g sample of a particular freon in a 2.55 L bulb at 25°C has a pressure of 262 torr. What is the molar mass of the compound
Data Table: Mass MgO: 2.8045g initial temperature(°C): 24.99°C final temperature(°C): 25.00 °C Calculate the number of moles of MgO used in the reaction. The molar mass of MgO is 56.305 g/mole.
Kinetic Molecular Theory states that particle collisions are elastic,but energy and collisions of the particles are proportional to the absolute temperature, but the more collisions according to Henry's law, the more gas dissolves.
What conclusions can you draw concerning structures of species containing the same number of atoms and the same number of valence electrons?
Ephedrine was once used in diet pills that could be purchased without a prescription. Ephedrine is composed of 72.7% C, 9.15% H, 8.49% N, and 9.68% O. What is the empirical formula for ephedrine
Calculate the frequency (in Hz) of light necessary to move an electron in a He+ ion from the n =2 to n =4 energy level. The Rydberg constant for a helium ion is R = 4.390 x 107 m-1
The reactant concentration in a zero-order reaction was 9.00×10?2{\it M} after 100s and 2.50×10?2{\it M} after 390s . What is the rate constant for this reaction
A solution of ammonia and water contains 4.40×1025 water molecules and 8.30×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
If a cylinder of NO has a volume of 20.00L and a pressure of 26.98 atm at 20 degrees Celcius, what is the mole fraction of NO knowing that there are 21.55moles of Nitrogen?
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