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Molecules which are polar overall exhibit a property called a dipole moment. Which of the following possesses polar bonds but has no dipole moment?
a. BBr3
b. CHCl3
c. PF3
d. H2O
e. SF4
diamond crystallizes in a cubis cell with a+0.35670 nm and Z=8. Using 3.51 g/cm cubed as the density of diamond calculate te value of avagadro's number.
What is the order with respect to OH ^-1 for this reaction. The answer is 2 and the solution is 2^X = 4 ; X=2. Do I do this with every rate reaction problem.
How many grams of potassium chlorate decompose to form potassium chloride and 450. mL O2 at 128°C and 750. torr?
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
When 1.550 g of liquid hexane (C6H14) undergoes combustion in a bomb calorimeter, the temperature rises from 25.87 ºC to 38.13 ºC. Find ?E rxn for the reaction in kJ/mol hexane. The heat capacity of the bomb calorimeter, determined in a separate e..
What pressure will the evolved carbon dioxide produce when 184.5g of calcium carbonate decomposes in a 20.00L container at 22.4 deg celsius?
What is the exact alkalinity of a water that contains 0.6580 mg/L of bicarbonate, as the ion, at a pH of 5.66? No carbonate is present.
A weak acid (HA) has a pKa of 4.904. If a solution of this acid has a pH of 4.356, what percentage of the acid is NOT ionized
An atmospheric chemist studying the pollutant SO2, places a mixture of SO2 and O2 in a 2.00 L container at 800k and 1.90 atm. when the reaction occurs, gaseous SO3 forms, and the pressure falls to 1.65 atm
A liguid stream in a refinery contains 0.20 mol propane/mol, 0.30 mol butane/mol and 0.50 mole pentane/mol. If the flow rate of the propane is 75 mol/min, what are the flow rates of the butane and pentane
Calculate the density of hydrogen sulfide gas, H2S, at 60.°C and 953 mmHg. Obtain the density in grams per liter.
How many Valence electrons does a balanced atom of Sodium have? What is the net charge on each ion?
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