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The element gallium has two naturally occurring isotopes with masses of 68.9300 amu and 70.9200 amu. What would be the fractional abundance of the first isotope, if the atomic weight was 69.6518 amu?
The volume of blood in the body of a certain deep-sea diver is about 7L. What is the maximum volume of nitrogen measured at 1atm and 37 celsius that could dissolve in the diver's blood plasma at a particular depth where the pressure is 10.3atm
In air and according to Stokes Law, the settling rate of particles is proprotional to the squares of their diameters, if they have the same densities
The solution to physical chemistry, A laser used to read CDs emits red light of wavelength 700 nm. How many photons does the laser emit per second
A gas made up of atoms escapes through a pinhole times as fast as gas. Write the chemical formula of the gas.
a gas sample occupies 4.20 l under a pressure of 800 torr at 350K.At what temperature will it occupy 3.60 L at the same pressure?
Which of these is not a protease that acts in the small intestine?
A common way of removing Cr3+ from solution is by precipitation of Cr(OH)3(s). An environmental engineer tells you that adjusting the pH to 8.5 will decrease total soluble Cr(III) to below 1 mg/L (1.92 x 10-5 M). Is this true?
Write an equation to show how the base NaOH(s) behaves in water. Include states of matter in your answer.
Calculate the mass of propylene glycol that must be added to 0.360 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To what temperature must the gas be heated to occupy a volume of 492 mL.
Which of the following has the smallest mass?
spectroscopy to determine whether your product is contaminated with unreacted cyclohexanol?
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