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Suggest a mechanism for the decomposition of hydrogen peroxide using a MnO2 catalyst. Rate equation is rate = k [H2O2]
Neptunium-239 has a half life of 2.35 days. How many days must elapse for a sample of 239Np to decay to 0.100% of its original quantity
Tin reacts with hydrochloric acid to produce hydrogen gas and tin (II) chloride. How many liters of hydrogen gas are produced at 27.0 degrees C, and a pressure of 710 torr if 2.80 grams of tin reacts with the excess hydrochloric acid
Pure tungsten melts at 3370 C . The liquid has a vapor pressure of 5 torr at 4337 C and of 60 torr at 5007 C calculate the normal boiling point of tungsten.
Consider the following reaction at constant P. Use the information here to determine the value of Delta-Ssurr at 398 K. Predict whether or not this reaction will be spontaneous at this temperature.
A 3.77g sample of oxalic acid (H2C2O4x2H2O) was dissolved in enough water to make 1000 mL of solution. Then 17.15mL of this oxalic acid solution was titrated to the end point with 22.05mL of an unknown sodium hydroxide soloution.
by mistake a quart of oil was dumped into a swimming pool that measures 25.0cm by 30.0cm assume the oil spread entirely
The most prominent line in the spectrum of Neon is found at 865.438 nm. Other lines are found at 837.761 nm, 878.062 nm, 873.375 nm, and 1885.387 nm.
Carbon-14 decays by beta emission with a half life of 5,730 years. Assuming a particular object originally contained 6.5 micro grams of C-14 and now contains 0.76 micro grams of C-14, how old is the object
What mass of O2 does the tank contain. kg (b) What volume would the gas occupy at STP? L (c) At what temperature would the pressure in the tank equal 150. atm
What molar ratio of sodium acetate to acetic acid should be used to prepare a buffer with pH = 4.5? Ka acetic acid = 1.8 x 10-5.
the empirical formula of a substance is bh3 the exper molar mass is 27.67 gmol. determine the molecular formula of the
what is the temperature of 0.44mol of gas at a pressure of 1.2atm and a volume of 12.0L
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