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A sample of hydrogen gas at a pressure of 733 mm Hg and a temperature of 67oC, occupies a volume of 15.0 liters. If the gas is heated at constant pressure to a temperature of 92 oC, the volume of the gas sample will be L.
A sample of helium gas at a pressure of 922 mm Hg and a temperature of 36oC, occupies a volume of 8.28 liters. If the gas is heated at constant pressure to a temperature of 60 oC, the volume of the gas sample will be L.
A sample of oxygen gas at a pressure of 0.996 atm and a temperature of 195oC, occupies a volume of 714 mL. If the gas is cooled at constant pressure until its volume is 544 mL, the temperature of the gas sample will be oC.
The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.800 miles.
What is the half-life of a compound if 78 percent of a given sample of the compound decomposes in 45 min? Assume first-order kinetics.
What is the molarity of a solution that is 7.00% by mass magnesium sulfate and has a density of 1.071.
Calculate the initial pH, pH after addition of 20 mL HCl, pH after addition of 50 mL HCl, pH at the equivalence point, and pH after addition of 120 mL HCl.
A sealed-end water manometer attached to an air duct reads 1598 cm. An open-end water manometer attached to the same duct reads 556.2 cm.
A chemical reaction takes place in a container of cross-sectional area 100 cm2 As a result of . the reaction, a piston is pushed out through 11 cm against an external pressure of 689 torr. What is the value for w for this reaction?
undergo combustion according to the unbalanced equation C2H6+O2=CO2+H2O how many moles of oxygen are required?
Calculate the energy change for the alternative reaction that yields chlorine sodide (Cl+Na-) . 2Na(s) +Cl2 (g) yeilds 2Cl+Na+(s) Assume that the lattice energy for Cl+Na- is the same as that for Na+Cl-
an electron is confined to a one dimensional box of length l it falls from the second energy level to the ground state and releases a photon with a wavelength of 322 nm. what is the length of the box
Draw the structures of salicylic acid and aspirin. Circle and identify the functional groups present in each compound and sulfuric acid is a catalyst. What does that mean?
what is the purpose of anhydrous CaCl2? Why it is important that none of the solid CaCl2 be included in the final distillation of your 1-bromobutane?
determine the temperature at which water will boil in an open vessel when the atmospheric pressure is 400 mm Hg.
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