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a cylindrical glass tube 15.0 cm in length is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g. Calculate the inner diameter of the tube in centimeters.
List the individual steps used in constructing a Born - Haber cycle for the formation of barium iodide (BaI2) from the elements. Which of the steps would you expect to be exothermic
A student found that her mixture was 15% NH4Cl, 20% NACL, and 75% SiO2. Assuming her calculations are correct, what did she most likely do incorrectly in her experiment?
How many possible resonance structures can you draw for SO3 without violating the octet rule for S
Briefly explain why it was not necessary for you to determine the mass of unknown liquid that you transferred to the flask before heating.
Tell which of the following compounds is likely to have a dipole moment, and show the direction of each. (a) SF6 (b) H2C=CH2 (c) CHCl3 (d) CH2Cl2
If 159 of wet is collected over water at 24 and a barometric pressure of 737 , how many grams of have been consumed.
Use Kirchoff's law to calculate ?vapH , the molar enthalpy of vaporization, of a substance at 218.15 K, given that its standard enthalpy of vaporization is ?vapH=32.45 kJ mol at 25.0ºC.
Describe briefly the trend in the stabilities of oxidation states within d-metal? [High and low oxidation states]
Pyridine is a heterocyclic aromatic compound similar in structure to benzene. It is widely used as an organic base because it reacts with acids, but is inert to most reagents.Write an equation with structural formulas to show how pyridine reacts w..
Explain why electrically neutral objects can become electrically charged even though charge cannot be created or destroyed.
The first step in the Ostwald process used to produce nitric acid is the formation of nitric oxide from ammonia and oxygen.
How many grams of sodium nitrite must be added to 120.0 mL of 0.15 M nitrous acid in order to prepare a buffer solution at pH 4.3? The pKa of nitrous acid is 3.337.
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