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A gaseous mixture of rm O_2 and rm N_2 contains 36.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg?
NaOH + CO2 - >Na2CO3 + H2O. If the average human body discharges 716 g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft? Answer in units of mol.
calculate the pH of solution formed by mixing 150 mL of 0.10M HC7H5O2 with 100 mL of 0.30M NaC7H5O2. The Ka for HC7H5O2 is 6.5 E -5
Determine what is the total mass of glucose in 5.10L of blood If a person has a glucos level of 108 mg.100mL, ? express your answer in grams?
The air we breathe is approximetly 20% oxygen. the reaction for the complete combustion of acetylene is 2C2H2 + 5O2 ------> 4CO2+ 2H2o
calculate the equilibrium pressure of N2O4(g) and NO2(g). (c) What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
It required 71.5 mL of a 0.155 M KNO3 solution to fully react the copper in the ore sample. What was the percent copper in the ore.
If 2.50 mol of copper and 5.50 mol of silver nitrate are available to react by single displacement, identify the limiting reactant.
Define Ideal gas law, Calculate the free energy of mixing when 1 mole of liquid A is mixed with 4 moles of liquid B at 25 degrees C to form an ideal solution. What is the change in chemical potential of component A?
The concentration of each gas once equilibrium is reached. The new equilibrium concentrations if the volume is suddenly halved (still at 298K)
A solid brick of dry ice (CO2) weighs 0.75 kg. Once the brick has fully sublimated into CO2 gas, what would be the volume of solid brick at STP.
What is the freezing point of a 28.6% (by mass) aqueous solution of HCl? Assume the HCl is 100% ionized.
Given that the partition coefficient for a solute is K in a water-ether solvent extraction system, is it more effective to do one extraction with V mL of ether or three extractions with V/3 mL of ether
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