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Consider the following chemical reaction 2H2O(l) >2H2(g) + O2 (g)what mass of H2O is required to form 1.2L of O2 at a temperature of 295 K and a pressure of 0.967 atm?
The density of germanium is 5.325 g/cm3. If you made a 5.3-nm diameter quantum dot of germanium, how many Ge atoms would it contain? Assume the dot is spherical.
Write a chemical equation for the reaction corresponding to the standard enthalpy of formation of N2O5 (g) and determine its value from the following thermochemical data
Calcium supplements commonly contain calcium ions in the form of calium carbonate (CaCO3). If one calcium supplement weights 600. mg, how many moles of calcium are contained in each pill
If an ideal gas is expanded reversibly, the heat absorbed qrev, can be expressed by the differential dqrev = Cv dT + P dV, Where Cv is a constant (called heat capacity at constant volume). Show that dqrev is an inexact differential.
if 5.0 of nitrogen at 12 degree Celsius and 1.30 atm pressure reacts with the same volume of hydrogen at the same temperature and pressure, what volume of ammonia is obtained at that temperature and pressure?
The Ka for hydrofluoric acid is 7.1x10^-4. The percent ionization of hydrofluoric acid at a concentration is 0.43 mol/L is _____. looking for percent numbers since we're doing percent ionization stuff.
A sample of hydrogen gas occupies 15.8 L at STP. How many moles of the gas are present?
what is the ph at the equivalence point in the titration of 10.0 ml of 0.51 m hz with 0.200 m naoh? ka 5.1 times 10-6
A particular first-order reaction has a rate constant of 1.35 × 10^2 s-1 at 25°C. What is the magnitude of k at 75°C if Ea = 85.6 kJ/mol?
What volumes of 0.150 M acetic acid and 0.065 M NaOH solutions must be mixed to prepare 1.00L of a buffer solution of pH 4.50 at 25C.(Show all work for 5 stars)
Based on the Hume-Rothery Rules, speculate on the possible driving forces behind the tendency for ordering in this system.
Use the van der waals equation and data in the text to calculate the pressure exerted by 18 gram of H2 at 20C in a 1.00L container. Repeat the calculation assuming that the gas behaves like an ideal gas.
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