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What body system is affected by asthma? What are the normal functions of that system? How are these functions normally regulated?
What is the silver ion concentration in a solution prepared by mixing 387 mL of 0.369 M silver nitrate with 421 mL of 0.564 M sodium phosphate? The Ksp of silver phosphate is 2.8* 10^18
Problem- A piston is expanded from 52.3 L to 56.0 L against an external pressure of 2.5 atm, and absorbs 0.347 kJ of heat in the process. Calculate the change in internal energy for the system.
Some aromatic compounds also undergo nucleophilic substitution, propose a mechanism for this reaction and indicate what types of substituents would be expected to be most reactive
A vertical force of 7 N (in the negative z direction) is required to hold the deflector in place. Determine the mass (kg) of the deflector. Assume the velocity of the water remains constant.
A 3.50g sample of histidine dihydrochloride (fw 228.08g/mol) in water and diluting to a final volume of 50.00ml. The resulting solution is then titrate with 0.500M NaOH. calculate the pH at each of the following points
determine how many grams of CaH 2 are required to generate 145 Litres of hydrogen gas if the pressure of hydrogen is 825 mm Hg at temperature of twenty one degree Celsius? .
Exactly 5.00 days later, the rate of decay was found to be 177 disintegrations per minute. Calculate the half-life, in days, for the decay of this sample.
a gas expands and does p-v work on the surroundings equal to 343 j. at the same time it absorbs 159 j of heat from the
two mwthods were described for determining the volume of the flask used for the molar mass determination.
A mixture of 10.0g of Ne and 10 g Ar have a total pressure of 1.6atm. What is the partial pressure of Ne
Use the balanced redox reactions and the standard cell potential to predict the volume of hydrogen gas (at STP) required each month to generate the electricity needed for a typical house. Assume the home uses 1600kWh of electricity per month.
The osmotic pressure of 0.010M MgSO4 solution at 25 degrees C is 0.318 atm. Calculate i, the van Hoff factor for this MgSO4 solution.
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