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Calculate the rms (average) speed of ClO2 atoms or molecules at 297 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant.
What are the advantages of working with microscale equipment as opposed to larger equipment in a Williamson ether synthesis of phenacetin experiment.
A gas of unknown molar mass was allowed to effuse through a small opening under constant pressure conditions. It required 184 s for 1.00 L of this gas to effuse.
A list of the calorie content of foods indicates that a 10 oz chocolate thick shake contains 331 Calories. Express this value in kJ and in J
What is the percent dissociation of HNO2 when 0.056 g of sodium nitrite is added to 115.0 mL of a 0.057 M HNO2 solution? Ka for HNO2 is 4.0 × 10-4.
A titration of 200.0 mL of 1.00 M H2A was done with 1.10 M NaOH. For the diprotic acid H2A, Ka1 = 2.5 × 10-5, Ka2 = 3.1 × 10-9. Calculate the pH after 600.0 mL of 1.10 M NaOH have been a
Choose the selection which correctly characterizes all three of the following substances in terms of whether they are polar or nonpolar: IF and NCl3 and SiF4
Calculate the density of xenon gas at 182 oC and 605 torr. Use R = 0.0821 L-atm/mol-K for the value of the gas constant.
An alkane with a molecular formula of c18h18 reacts with chlorine in the presence of light and heat to give a single monochloride c8h17cl. What is the most resonalble structure for the starting alka
What is the pH of a solution of 0.20M RbCHO2? Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unless the "x is small" app
Calculate (approximate) the pH of a 0.30M solution of ascorbic acid. Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unles
sulfur dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 179 s for 1.00 L of this gas to effuse. Calculate the effusion time of arsine (AsH3) unde
What is the geometric structure of acetone (CH3)2CO. Indicate the bond angles and specify if they are non-ideal. Help?
A mercury nanometer contains 2 g of Ar. A burner heats it to P-ext. at 760 torr. What is the Temperature of the gas in the bulb when the total volume is 3 L and H=76mm?
Use the Ksp values in the table 16.2 to calculate the molar solubility of the following compound in pure water. Before Addition ~0.00mol 0.100mol 0.100mol
Which of the following buffer systems would be the best choice to create a buffer with the pH= 9.00? For the best system , calculate the ratio of the masses of the buffer components required to make
What is the pressure inside a 5.00 L vessel containing 0.0040 mol of nitrogen gas at a temperature of 23 degrees C
A buffer contains significant amounts of acetic acid and sodium acetate. Write an equation showing how this buffer neutralizes added acid and added bases
A 1.00 L sample of gas, initially at 273 degrees C and 2.00 atm was cooled to 0 degrees C and the pressure changed to 0.20 atm. What is the final volume of the gas in liters?
An 11.2 liter flask at 0 degrees C contains one mole of oxygen, two moles of nitrogen and three moles of helium. What is the pressure in the flask
A radiation detector exposed to sunlight records the energy falling on a given area each unit time. If such a detector has a reading of .430 cal cm^-2 min^-1, how many photons of sunlight are striki
Suppose 25.0 g of solid NaOH is added to 1.5 L of an aqueous solution that is already 2.4 M in NaOH. Then water is added until the final volume is 4.00 L. Determine the concentration of the NaOH in
A gas thermometer has a volume of 83.3 mL at 20 degrees C. After being placed in a container whose temperature is to be measured its volume ( at the same pressure ) dropped to 67.3 mL. The new tempe
A container of gas at 760 mmHg and 20 degrees C is heated to 40 degrees C. What is the new pressure in mmHg?
A gas at 30 degrees C and 600 mmHg occupies a volume of 412 cm^3. What is the volume in cm^3 that the gas will occupy if the temperature is lowered to -30 degrees C at the same pressure