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Naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter. The heat combustion of naphthalene is -40.1kJ/g. When 0.8210g of naphthalene was burned in a calorimeter containing 1,000g of water, a temperature rise of 4.21 degree celcius was observed. What is the heat capacity of the bomb calorimeter excluding the water?
calculate ground state energy, 1st excited energy level, and wavelenght of an electronic transition between the 2 lowest energy states for an electron
Which of the following is correct regarding an acid-base conjugate pair. a. The conjugate base will have one less proton and one less negative charge. b. The conjugate acid will have one more proton and one less positive charge.
The volume of a sample of gas (2.49 g) was 752 mL at 1.98 atm and 62 degrees Celsius. the gas is? SO2, SO3, NH3, NO2, or Ne
Which of the following wave functions are eigen functions of the operator d^2/dx^2? If they are eigen functions what is the eigen value
The densities of methanol and water at this temperature are 0.782 g/mL and 1.00 g/mL, respectively. For this solution, calculate each of the following: molarity, molality, percent by mass, mol fraction, and mol percent.
Enter formulas for these ionic compounds. copper(I) bromide copper(II) bromide iron(III) bromide lead(IV) bromide copper(I) oxide copper(II) oxide iron(III) oxide lead(IV) oxide
how many grams of oxygen are collected in a reaction where 231 ml of oxygen gas is collected over water at a
Identify which sets of quantum numbers are valid for an electron. Each set is ordered (n, l, ml, ms).
At 25 degrees celcius a sample of NH3 effuses at a rate of .050 mole per minute. Under the same conditions, which gas effuses at approximately one-half that rate?
the equilibrium partial pressure for the reaction 2NO2(g)--> N2O4(g) are 0.0686 atm for NO2(g) and 1.250 atm for N2O4(g).
If 2.00 moles of acetylene react completely with sufficient oxygen, how many grams of carbon dioxide are produced?
Calculate the empirical formula and then determine the molecular formula of this compound using the given molar mass. b) Draw three lewis structures for molecule that satisfies the octet rule for each atom.
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