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Typically an adult will inhale 2.1 L of air per breath. What mass of ozone is taken into the lungs per breath by an adult breathing air containing 1.57 x 10^-4 micro(ug) grams of ozone per cm^3 of air?
when ethane (C2H6) is burned, how many grams of oxygen are needed to react with 477 grams of ethane?
crystallizes in a body-centered cubic array of atoms in which the length of the unit cell's edge is 569.7 pm (10-12 m). Calculate the density of the metal in g/cm3.
What osmotic pressure in atmospheres would you expect for a solution of 0.140M CaCl2 that is separated from pure water by a semipermeable membrane at 310 K?
Using what you know about acid/base chemistry, determine the immediate effect that two 325-mg aspirin tablets would have on the pH of the stomach. Assume your stomach is half a liter in volume.
The density of the waste is 85.3 Ibm/ft3. Calculate the weight of the pond contents in Ibf using a single dimensional equation for your calculation
A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and Sodium Benzoate, NaC6H5CO2, in a 150.00 ml of solution. The Ka for benzoic acid = 6.3E-5.
The Henry's Law Constant for O2 in water at 20 C is 1.28x10-3mol/(L atm). How many grams of O2 will dissolve in 2.0L of H2O that is in contact with air where partial pressure of O2 is 0.209atm?
the complete combustion of 1.043g of C9H8O in a bomb calorimeter( Ccal= 3.986 kj/c) produced an increase in temperature of 12.85C. Calculate the molar enthalpy of combustion of C9H8O, in kJ/mol.
Consider the flask apparatus in the following diagram, which contains 2.00 L of H2 at a pressure of 380. torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 300. torr after the stopcock is opened, determine the ini..
The solubility of I2 (s) in .100 M KI solution at 25 degrees celcius is .05135 moles per liter. The .1 M NaN03 provides the same ionic environment as .1 M KI. From this information calculate the concentration of I3-, I-, I2 in the latter solution ..
What is the mole fraction of solute and the molal concentration for an aqueous solution
According to the following reaction, how many grams of hydrogen gas are necessary to form 0.475 moles nitrogen gas? nitrogen monoxide (g) + hydrogen (g) nitrogen (g) + water (l) 2) According to the following reaction, how many moles of carbon diox..
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