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A grafuated cynlinder is filled to the 40.0-mL mark with a mineral oil. The masses of the cylinder before and after the addition of the mineral oil are 124.966g and 159.446g, respectively. In a separate experiment, a metal ball bearing of mass 20.138g is placed in the cylinder and the cylinder is again filled to the 40.0-mL mark with mineral oil. The combined mass of the ball bearing and mineral oil is 50.952g. Calculate the density and radius of the ball bearing (volume of a sphere of radius r is 4/3pi r^3).
g/cm 3 cm?
Compute the activation energy for the flashing process. When At 29 o C the average rate is 3.3 flashes every 10 seconds; at 23 degree Celsius the average rate
One compound of mercury with a formula mass of 519 g mol-1 contains 77.26%Hg, 9.25%C, and 1.17%H (with the balance beingO). Calculate the empirical and molecular formulas.
A gas mixture with a total pressure of 750mmHg contains each of the following gases at the indicated partial pressures:CO2 , 133mmHg ; Ar,215mmHg and O2,177mmHg
At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 1.40 atm, PB = 8.90 atm, PC = 5.10 atm, and PD = 2.50 atm.
Grignard reagents can be used as nucleophiles in other reactions such as SN2 reactions. What would be the product for the following SN2-like reaction of an epoxide?
Determine the molarity of a solution of twenty grams of Ammonium bromide, NH4Br, in enough water to produce 132 mL of solution?
what is the total pressure in a cannister that contains oxygen gas at a partial pressure of 804 mm Hg, nitrogen at a partial pressure of 220 mmHg, and hydrogen at a partial pressure of 445 mmHg.
How many grams of sodium fluoride should be added to prepare the buffer solution? Neglect the small volume chane that occurs when the sodium fluoride is added.
A 3.50-g sample of magnesium hydroxide was treated with 50.0 mL of a 0.500 M aqueous sulfuric acid solution. Calculate the number of grams of magnesium hydroxide that remained undissolved.
What volume of nitrogen gas is produced from the liquid nitrogen spill if the temperature of the room is 25 degrees C at 1.00 atm?
If 5.50 of the unknown compound contained 0.183 of and 0.367 of , how many moles of oxygen, , were in the sample.
hydrogen peoxide decays into water and oxygen in a first-order process at 20 degrees celcius. H2O2 yeilds H2O and 1/2 O2 the rate expression is 1.77X10 -5 [H2O2] what is the half life in hours of h2o2.
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