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Helium gas is contained in a pressure vessel of volume V=10m3. Determine the mass (in kg) of helium in the tank if the temperature is 20°C and the pressure is 4 bar. Use the ideal gas law. For Helium, M=4.003 kg/kmol.
If 10.0mL of blood plasma has a mass of 10.279g and contains 0.870g of protein, what is the mass/mass percent concentration of the sample
If 160 mL of wet h2 is collected over water at 24 degrees Celsius and a barometric pressure of 738 torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
Explain the relationship between the electron configuration and the corresponding principal and angular momentum quantum numbers for each of your elements.
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over the course of one year
A lactic acid/lactate ion buffer solution contains 0.44M HC3H5O3 and 0.90 M C3H5O3^-, respectively. The K a value of lactic acid is 1.4times 10^-4. Calculate the pH of this buffer.
Calculate the molar solubility of AgCl in a 1.0 M NH3 solution. The equilibrium constant K for the overall reaction is the product of the equilibrium constants of the individual reactions where Ksp = 1.6 X 10-10 and Kf = 1.5 X 107.
would bromine be a more or less effective disinfectant and bleaching agent than chlorine
Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the mole fraction of NO after mixing, if initially NO is in the first flask (Volume = 1.000 L) at 275.3 torr..
On a sheet of paper draw the molecule that fits the given description. From the structure you drew determine the correct IUPAC name.
A tank contains 480. grams of oxygen and 80.0 grams of helium at a total pressure of 7.00 atm. Calculathte following.
An industrial wastewater contains 2000 mg/L of total Ammonia as N, 490 mg/L of total Ni and has no inorganic carbon. The PH = 2.8. Using the diagram calculate to what pH the waste must be adjusted to so that the total Ni concentration is 1 mg/L.
What is the longest wavelength of radiation that possesses the necessary energy to break a nitrogen-nitrogen bond
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