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According to the postulates of the kinetic theory of gases, the average speed of the molecules of a given gas is proportional to the
A) square root of the absolute temperature.B) Celsius temperature squared.C) absolute temperature squared.D) absolute temperature.E) reciprocal of the absolute temperature.
magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. what is the pecentage yield of 10.1g
Calculate the final temperature of 33 mL of ethanol initially at 13 degrees Celsius upon absorption of 657 J of heat. (density of ethanol =0.789 g/mL).
Suppose that 1.41 g of impure barium hydroxide is dissolved in enough water to produce 177.1 mL of solution and that 44.1 mL of this solution is titrated to the stoichiometric point
Find the change in entropy (S) for the system, surroundings and universe for the conversion of 1 mol of ice at 0 degrees C and 1.00 atm to 1.0 mol of steam (vapor) at 100 degrees C and 0.50 bar. Useful data might be
Which of the following combinations of quantum numbers can refer to an electron in a ground state cobalt
how many atoms of oxygen per second are colliding with each square centimeter of the surface? The residual gas in the system has the same composition as air, and the temperature is 295K
26.0cm of a solution containinh 1.86g of X2CO3 in 250 reacted completely with 27.0cm of solution contain 3.65g of HCL per dm,calculate the molar mass of X2CO3 and relative atomic mass of X, and identify X.
Before the reaction began, the concentrations of the reactants were 0.060 M of SO2 and 0.050 M O2. After the equilibrium is reached, the concentration
Calculate the volume of a gas if 10.0 ml of pure alcohol (C2H6O) is vaporized at its normal boiling point. (assume 1 atm pressure)
Trifluoroiodomethane, CF3-I, undergoes free radical addition to alkenes. Explain the fact that the free-radical addition of this compound to 2-methyl-2-butene is faster than its addition to 1-pentene.
a 25.0 gram piece of ice at 0.0 degrees celsius is added to a sample of water at 8.0 degrees celsius. all of the ice
A certain instrument has a has a standard deviation of 1.7280%. How many replicate measurements are necessary if the standard error mean is to be 0.0210%
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