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The mole fractions of CO2 and O2 in the atmosphere have been estimated to be 4.2 x 10-5 and 0.2, respectively. Given the Henry's law constants of 1,600 and 43,000 atm, respectively, calculate the ratio of CO2:O2 in both the atmosphere and in the ocean.
boron has two naturally occurring isotopes 10b 19.9 and 11b 80.1. although the b2 molecule does not exist naturally on
Evaluate the z-component of the angular momentum and the kinetic energy of a particle on a ring that is described by the (unnormalized) wavefunctions e^iΦ ,e^-2iΦ ,cosΦ ,(cosφ)e^iΦ , (sinφ)e^-iΦ
A 100.0 mL sample of water from a salt lake has a chloride ion concentration of 0.25 M. Does AgCl (s) precipitate from solution if 5.0 mL of 0.10 M AgNO3 (aq) is added to the sample
In writing the chemical formula of a compound such as Al2O3, the following statement is a true relationship between the Al and O atoms
Show the long hand and short hand electron configuration and orbital diagram for elements with these atomic numbers.
The mass spectrum of an organic compound shows the relative abundances of M to be 83.79% and M 1 to be 13.59%. Assuming the peaks are caused by 12C and 13C isotopes,
As food manufacturers add vinegar to food preparations to make them tart, rather than pure acetic acid,
Use data from Table 7.2 in the textbook to calculate the volume of butane,C4H10, measured at 16.3 Celsius and 749 mmHg, that must be burned to liberate 9.00×104 J.
For the reaction PCl5 ->
Using the henderson hasselbach equation if [H+] =1.55x10^-4 and the ratio [A-]/[HA] = 0.52, what is the Ka of the solution? Is this consided to be a strong or weak acid?
Define internal energy and enthalpy. What is the difference between the two? List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne
According to the following reaction, how many moles of potassium sulfate will be formed upon the complete reaction of 0.462 moles potassium hydrogen sulfate with excess potassium hydroxide
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