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A person runs up a long flight of stairs in 10 seconds. If the person's weight is 600 N, determine the person's power output
A sample of oxygen is collected over water at 22 C and 752 mm Hg in a 125-mL flask. the vapor pressure of water at 22 C is 19.8 mm Hg. how many moles of dry gas are collected and how many moles of w
Calculate the cost of 40 mL of sulfuric acid. given that Sulfuric acid (18 M) = $54.30/2.2 L
Titrate with 0.1005 M NaOH and arrive at an endpoint at 24.20 ml. You know that at the final pH both protons have been titrated. What is the Molar Mass of the acid
A ruler of mass m = 75g and L=3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance d = 1.0meters apart. What is the frequency of oscillation in the ruler
An elevator can lift a 185 N aircraft a distance of 36 meters in 11 s. What is the power output of the elevator
A soldier has a huge contraption that notches a large 2 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the
Saturated steam at 1 atm condenses on a vertical plate which is maintained at a temperature 99 C. If the rate of heat transfer by condensation is 180 KW, determine the rate at which the condensate d
rail car that weighs 43 N is accelerated at 8.9 m/s/s for 4.5 seconds. How much work is done on the rail car
A solenoid is constructed having 350 turns of wire and is 62.0 cm in length. A single hanging wire is positioned vertically at the end of the solenoid, what is the magnitude of the force on the wire
Describe the general approaches that are used to determine the mechanism of catalysis of an enzyme. Include in the approaches how covalent modification
What mass of water (in grams) forms from the reaction of 2.66 L of hydrogen gas and 2.06 L of oxygen gas. Both gases are at 759 torr and 7.9 oC.
In a movie, a person is supposed to jump with a motorcycle from the roof of one skyscraper to another one. what minimum initial speed would she need to make the jump
Identify one conjugate acid base pair in the reaction of HBA with H2O to produce BA? and H3O+.
Two 3.50g beads (point charges) are hanging on threads and repel each other after being equally charged. What is the charge on each bead
what is the partial pressure of each gas if the total pressure of each gas if the total pressure is 735 mm Hg
Hypohalic acid, HOX, is a weak acid with a Ka of 3.341x10-8. What is the pKb for the hypohalite anion, OX-, in a 0.8865 M solution of KOX
An intermediate reaction used in the production of nitrogen containing fertilizers is that b/w NH3 and O24NH3(g) + 5O2(g)--> 4NO(g) + 6H2O(g)
a piano note is compared to a tuning fork vibrating at 440 Hz. Four beats per second are discerned by the piano tuner. What was the initial frequency of the piano wire
What is the pH of a 0.5901 M solution of NaA. Note: HA is a weak acid with Ka = 6.144x10-8.
Your friend's car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.7° below the horizontal. determine the car's position relative to the base of the cliff
Predict the acid/base/neutral properties of 1.00 M solutions of, respectively, KH2AsO4 and K2HAsO4.
Your roommate is working on his bicycle and has the bike upside down. He spins the 70.0cm -diameter wheel, What is the pebble's acceleration
Would 0.334 M solutions of the following three compounds, respectively, be acidic, basic, or neutral?
An air conditioner operating between 97F and 72F is rated at 3900 Btu/h cooling capacity. What horsepower is required of the air conditioner motor