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At STP, air can be considered to be a mixture of ideal gases: 21.0% O2, 78.0% N2, and 1.00% Ar by volume. a. Calculate the partial pressure of each gas at STP. b. Calculate the density of air in g L-1 at STP.
determine the solubility of iron in mgl as fe in a solution in equilibrium with feoh3 s ironiii hydroxide 10-2m total
Why is it impossible to know both the position and velocity of an atom (i.e. electron). It states this in the Heisenberg uncertainty principle...but why
Determine which of the following kinds of light contain enough energy to break chemical bonds in biological molecules by calculating the total energy in 1 mol of photons for light of each wavelength.
Imagine you are working on ways to improve the process by which iron ore containing Fe2O3 is converted into iron: Fe2O3(s) + 3 CO(g) 2 Fe(s) + 3 CO2(g)
When 150g of water at a temperature of 22.5C is mixed with 65.5g of water of an unknown temperature. The final temperature of the resulting mixture is 47.9C. What is the initial temperature of the second sample
Determine the ionic strength. Assume that all the salts completely dissolve and dissociates into their respective ions
Given K=6.45x10^5 for 2NO(g)+O2(g)=2NO(g) at 500K, what concentration of oxygen would be needed to maintain equilibrium in a system where NO and NO2 are known to be at equal concentrations.
A trial of this decomposition experiment, using different quantities of reactants than those listed in the question above produced the following data: Volume of O2 produced at room conditions
Codeine, C16H21NO3, is a monohydroxic derivative of morphine with pkb=6.05. Calculate the PH of a 80.0 ml soultion that contains 6.5 mg of codeine
The dipole moment (mu) of HBr (a polar covalent molecule) is 0.82 D (debye), and its percent ionic character is 12.1%. Estimate the bond length of the HBr bond in picometers.
For the reaction: CO(g) + 2H2(g) = CH3OH(g) Kp = 2.26 X 10^4 at 25C Calculate Delta Grxn for the following conditions: P(CH3OH) = 1.0 atm P(CO) = P(H2) = 0.010atm
The isothermal compressibility of copper at 293K is equal to 7.25X10^-7 bar^-1. What pressure must be applied to copper at 293K in order to increase its density by 0.08%
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