Determine the numbers of grams of dry nh4cl need
Determine the numbers of grams of dry NH4Cl need to be added to 1.90 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.67? Kb for ammonia is 1.8 x 10-5.
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The specific heat of the water is 4.184 J/g C. Assume a solution density of 1.00g/mL. 20.12 grams of butane, C4H10, was combusted with oxygen in a bomb calorimeter.
A mass of 1.90 kg is joined to a light cord which is wrapped around a pulley of radius 5.20 cm, which turns having negligible friction. The mass falls at a constant acceleration of 3.65 m/s2. Determine the moment of inertia of the pulley.
Sodium acetate behaves as a strong electrolyte in an aqueous solution, yielding Na+ cations and CH3CO2- anions. A particular solution of sodium acetate has a pH of 9.07 and a density of 1.0085g/mL.
The wheelchair ramp has to be built. If angle has to be 5 degrees and c=15 feet, how high is ramp and how long is ramp along ground?
What power output of the rider is needed to maintain a constant speed of 3.2 m/s (around 7.2 mph) up a 5.0% grade (a road which increases 5.0 m for every 100 m all along the pavement)? Suppose that frictional losses of energy are negligible.
The hydrogen gas generated is collected over water at 25.0°C.The volume of the gas is 150 mL calculated at 1.00 atm. determine the number of grams of sodium used in the reaction.
The probability that airplane engine will fail in transcontinental flight is 0.002. Supposing that engine failures are independent of each other, determine the probability that on certain transcontinental flight, a six-engine plane will experience
Explain what mass O2 is needed to inflate it to the same size and pressure at the 5 degrees Celsius if 12.0 g of O2 is needed to inflate a balloon to a certain size at 27 degrees Celsius.
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