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Problem- At least how many standard solutions would you need to make a calibration graph, assuming that the graph is expected to be a straight line? Explain your answer. Do not comprise the data from distilled water in this question.
The standard enthalpy of atomization of an element is the energy required to convert one mole of an element in its most stable form at 25 Celsius to one mole of monoatomic gas.
After that 1.00mL of a 10.9mM Lithium standard was added to 9.00mL of serum as well as this spiked serum gave an intensity reading of 893 units. Explain what is the original concentration of Li in the serum
it is observed that a volume of 29.15 mL of KOH was neede to complete the process of titration. Determine what is the concentration of this unknown HCl solution?
1.9 kJ f heat is added to a slug of rhodium and a separate 1.9 kJ of heat is added toa slug of zinc. The heat capacity of the rhodium slug is 318 J/ degree C while the heat capacity of the zinc slug is 996 J/ degree C.
A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36mg.
Consider another expandable balloon is filled with nitrogen gas. The density of the gas is 1.24 g/L and the outside pressure is 1.05 atm. What is the temperature of the gas?
Sleeping pills often contain barbital, which is weakly acidic (pKa = 8.00). For analysis of the barbital content of a sleeping pill, a titration is carried out with strong base. It takes 12.00 mL of 0.200 M base to reach the stoichiometric point.
Calculate the pH of a solution resulting from the titration of 50mL of 0.078M HCl with 25 mL of 0.083M NaOH. Give your answer to two decimal places.
Heat of hydrogenation of 1,3,5-hexatriene is -335 kj/mol. that for 1,5- hexadiene is -252 kj/mol. Estimate the resonance energy of hexatriene.
1. Write all of the resonance structures for m-bromonitrobenzene. 2. Write all of the resonance structures for o-bromonitrobenzene.
Calculate the molar concentration of the HCL solution that the student used. Calculate the number of moles of HCL neutralized by the antacid tablet.
A 295mLflask contains pure helium at a pressure of 742torr . A second flask with a volume of 465mL contains pure argon at a pressure of 717torr .
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