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.
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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.
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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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