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A 6.55 g sample of C6H5NH2 was combusted in a bomb caloriemeter. If the temp rose by 32.9 degreese C use the info below to determine the heat capacity of the calorimeter (Ccal)
C6H5NH2 = 93.13 g/mol, O2 = 32.00 g/mol CO2 = 44.01 g/mol H20 = 18.02 g/mol NO2 = 46.01 g/mol
4 C6H5NH2 + 35 O2 → 24 CO2 = 14 H20 = 4 NO2
What is the volume of 290. mL of oxygen gas at 112°C and 790. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.
What volume of 0.200 mol/L sodium hydroxide solution would be needed in an industrial process to precipitate all of the magnesium ions from 1.00 ML of sea water
An automobile gasoline tank holds 49kg of gasoline. When the gasoline burns, 172kg of oxygen are consumed and carbon dioxide and water are produced.
If you look at a reaction equation for an esterification reaction, you cannot tell where the oxygen comes from (acid or alcohol). Knowing the mechanism of this reaction, devise an experiment using O18, to help prove unequivocally where the oxygen ..
Give the equations representing the first and second dissociations of oxalic acid. Calculate the value of the first dissociation constant K1, for oxalic acid if the value of the second dissociation constant K2 is 6.40 x 10 ^-5
A chemical reaction is known to occur spontaneously under standard conditions. Which of the following statements is/are true (more than one answer may be selected):
If the outermost electron in a potassium atom were excited to a 4d-orbital and then fell to the same orbitals, describe qualitatively how the emission spectrum would differ from that of hydrogen (do not do any calculations). Explain your answer.
How many moles of AgCl(s) will dissolve in 1.00L of 0.100 M NaCN and what are the concentration of the various ions in solution. K = 7.08 x 1019 for the reaction Ag+(aq) + 2 CN- ? Ag(CN)2-
How much heat is required to vaporize 55.8g of acetone at its boiling point? The heat of vaporization of acetone at its boiling point is 29.1 kJ/mol
What is the heat of the reaction which forms 1.00 mole of gaseous monatomic bromine from 0.500 mole gaseous diatomic bromine
The composition of a gas on a dry basis is 71.0 mole% N2, 12.0% O2, 12.0% CO2, and 5.0% CO. If the mole fraction of water is 0.160, what is the gas composition on a wet basis?
Human saliva has a pH of approximately 6.8, and can be considered a: a)strong acid b)weak acid c)strong base d)weak base
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