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the PH of blood stream is maintained by a proper balance of H2CO3 and NaHCO3 concentrations. What volume of 5 M NaHCO3 solution , should be mixed with 10 ml sample of blood which is 2M in H2CO3 in order to maintain a PH of 7.4 . ka for H2CO3 in blood is 7.8*10^-7?
What mass of sucrose should be combined with 549 g of water to make a solution with an osmotic pressure of 9.00 atm at 280 K? (Assume the density of the solution to be equal to the density of the solvent.)
a certain first-order reaction has a rate constant of 8.80times10-3. how long will it take for the reactant
The Group 5A elements can form molecules or ions with three, five or six covalent bonds. Predict the molecular structure and hybridization of the following substances: NH3, AsCl5 and PF6-. Why doesn't NF5 or NCl6- form
The steam is comes out of the feed water at 200 C. The water at a flow rate of 500 kg/h enters the feed water heater at 20C. Calculate the feed water exit temperature.
What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 2-bromobutane. Draw the organic product resulting from using these chemicals in the Wittig reaction.
Define the total mass flow rate of a process stream is 67 kg/h. If the mass fraction of toluene in the stream is 0.65. Explain what is the mass flow rate of toluene
write the skeleton equation representing the heating of magnesium carbonate to produce solid mangnesium oxide and carbon dioxide gas.
determine the trend in sizes of the ions o2-n3- f- and also explain why does the trend exist? also describe which of
Problem- A vapor-compression refrigeration system, using ammonia (R-717) as the refrigerant, is operating with and evaporator temperature of -5 degree C and condenser temperature of 40 degree C.
Excitation of the 3s electron from Mg+ to a 3p orbital occurs at 280.0 nm. The probability of filling a 3p orbital relative to the 3s orbital is 3/1. Assuming that the total Mg+ population in a given atomization source is 3.5 x 10^18 ions at any g..
How many Mg of catfish would be obtained if the same aqueous solution is extracted once with 60 ml of methylene chloride. Come pare the two results . In both experiments we use the same amount of organic solvent. However do we isolate the same amo..
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