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Briefly explain why a volumetric pipet with a chipped or broken tip is usually useless,while a buret with a chipped or broken tip can still deliver accurate volumes.
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
write the skeleton equation representing the heating of magnesium carbonate to produce solid mangnesium oxide and carbon dioxide gas.
meteorological balloon contains 375 L of helium at 29°C and 0.928 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 a..
Consider a saturated solution of Zinc arsenate, Zn3(AsO4)2, in which the following reactions can occur: Zn3(AsO4)s (s) --> 3Zn+2 + 2AsO4 -3 Ksp=1.0e-27 AsO4 -3 + H2O ---> HAsO4 -2 + OH- Kb1=3
The density of this solution is 1.08 g/mL. Calculate the molarity, molality, weight percent, and mile fraction of the glucose solution.
Alkali metals are extremely reactive with water. Suppose I give you a 55.50 g chunk of cesium and you throw it into a lake. When it reacts with water to form cesium hydroxide and hydrogen gas
the heat of vaporization of benzene c6h6 is 30.8 kjmol at its boiling point of 80.1 degc. how much heat is required to
Consider the reaction between 50.0 mL of 0.200 M sodium hydroxide and 75.0 mL of 0.100 M HCl at 25 degrees Celsius. Which of the following is true?
what is the ratio of the population of nuclei oriented opposite the magnetic field with respect to those oriented with the magnetic field at 25°C
Calculate the concentrations of all species at equilibrium for each of the following cases. (b) 1.0 mol pure HOCl is placed in a 2.9-L flask. exact answer only please.
What are the energies of the lowest five energy levels in a 3 dimensional box where a=b=c and the degeneracy of each level
When 20.0 grams of water is cooled from 20.0 Celsius to 10.0 Celsius, the number of Joules of heat released is
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