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Using bond enthalpies, estimate the heat of the gas phase reaction of methane with bromine to form methyl bromine and hydrogen bromine.
Use electronegativity values to arrange the following bonds in order of decreasing polarity: N-O, N-N, N-P, and C-N
What will be the volume of the balloon after half of the moles of helium leak out, it is warmed to 10 °C, and the pressure is lowered to 0.75 atm?
moles of dye in 50 mL of solution is consumed in 188 seconds, what is the average rate of consumption of dye in mol/L.s?
A sample of an ideal gas at 1.00 atm and a volume of 1.38 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume.
The most accurate values of absorbance are obtained in the range of A = 0.3-2. Which of the following reasons account for lowered accuracy at higher or lower absorbancy values? (Check all that apply).
Describe the procedure for conducting a melting point experiment. Include the names of the equipment used and the observations you could expect to make.
Ozonolysis of C followed by treatment with Zn and water gives CH3CHO and compound D (C9H10O). The proton NMR spectrum of compound D is given below. Treatment of compound D with ethyl magnesium bromide yields A. Draw the structures of compounds A, ..
Calculate the weight of precursor salt needed to make 500 ml of a 2 M aqueous solution of the metal ion from each salt.
What is the concentration of glucose (a covalent compound) after 0.125 L of 3.00 M glucose solution is diluted to 1.50 L
1.90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
If an unknown crystalline organic compound has a heat of melting that is 8.605 kJ/mole and a melting point of 250.6 C
A 2.00 L sample of air at -50 degreees C has a pressure of 700 torr. What will be the new pressure in torr if the temp is raised to 50 degrees C and volume is increaed to 4.00 L
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