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In an experiment, the viscosity of the gas was found to be 2.25 x 10^-4 CGS units.
The RMS velocity of the molecules is 4.5 x 10^4 cm/s. The density of the gas is 1 gm per liter.
Calculate the mean free path of the molecules.
An object is made up of copper and zinc. The mass of the object is 46.2652g and has a density of 9.25 g/cm^3. What percentage of the object is copper. What percentage is zinc
When a 1.90 mg sample of methane burns in excess oxygen, how many grams of water and carbon dioxide are formed?
a student titrates 0.738 grams of an unknown solid, weak acid with 0.1027 Molarity NaOH. What is the molecular weight of the unknown solid, weak acid?
a mole of methane assume perfect gas is heated reversibly at atmospheric pressure until its volume doubles. the
Calculate ?H, q and w when 1.00 mol of helium at 5.00L and a temperature of 298.15K is expanded and heated simultaneously
1. Calculate the pH after 0.0 mL of KOH has been added. 2. Calculate the pH after 10.0 mL of KOH has been added. 3. Calculate the pH after 25.0 mL of KOH has been added. 4. Calculate the pH at the equivalence point. 5. Calculate the pH after 150.0..
Obviously, B has to be part of the reaction. Explain how the rate expression can be zero order in [B] (i.e. changing the [B] does not change the overall rate of the reaction) even though B has to be part of the reaction to make C.
An element X whose atomic weight is 22.7 is a mixture of two isotopes with atomic masses of 24.1 and 22.5, respectively. Calculate the relative abundance (mole percent) of each isotope in the mixture.
Calculate the expansion work done against a constant external pressure of 0.991 atm and at a constant temperature of 18°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas.
If you used NaClO instead of CuSO4 in reactions other than the reaction with KI and Starch, would you expect the results to always be identical?
A buffer solution was prepared by adding 4.95 g of sodium acetate, NaCH3CO2, to 2.50 e2 ml of .150 M acetic acid. What is the pH of 1.00 e2 ml of the buffer solution if you add 82 mg of NaOH to the solution
briefly explain why nitrogen is considered to be the most limiting plant nutrient in humid environments. explain the
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