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Ammonia(NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO)and water. What mass of ammonia is consumed by the reaction of 1.50g of oxygen gas
A ball is thrown toward a cliff of height h with a speed of 31m/s and an angle of 60 degrees above horizontal. What was the maximum height of the ball
You charge an initially uncharged 80.9-mF capacitor through a 46.7-? resistor by means of a 9.00-V battery having negligible internal resistance. What is the charge after a long time
If equal amounts of I2 and cyclopentene are mixed at 1 bar and 500k, what will be the equilibrium partial pressure of I2. Kp=7.76x 10^-3
A 300 kg elevator is being pulled upwards by a steel cable at a constant velocity. What is the net force on the elevator
Three 45 ohm lightbulbs and three 75 ohm lightbulbs are connected in series. what is the total resistance of the circuit
Silicon tetrafluoride reacts with F- to produce the hexafluorosilicate ion, SiF6 2-. GeF4 behaves similarily, but CF4 does not. (A) Draw Lewis structures for SiF4, GeF6 2-, CF4. What is the hybridiz
Prove the following statement using contraposition: If n, is a positive integer such that n(mod 3) = 2, then n is not a perfect square and find a solution (if it exists) to the linear diophantine equa
Two 2.3-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0 battery. What is the charge before the Teflon is removed
Carbonyl fluoride is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, via the reaction
The current supplied by a battery in a portable device is typically 0.131 A. Find the number of electrons passing through the device
A milliammeter reads 15mA full scale. It consists of a 0.20 Ohm resistor in parallel with a 36 Ohm galvanometer
The density of ethanol is 0.7893 g/mL. What is the volume of 3.5 grams of ethanol. Of 7.0 grams of ethanol.
A common capacitor found in the lab is in the form of a cylinder of length 2.5 cm. What is the value of the capacitance
The heat of solution of ammonium chloride (NH4Cl(s)) in water is +14.7 kJ/mol. Calculate the mass (in g) of NH4Cl(s) required to change the temperature of (1.2550x10^2) ml of water from (2.440x10^1)
Paper has a dielectric constant of 3.5 and a dielectric strength of 16 kV/mm. What is the capacitance of the device
The driver of a car wishes to pass a truck that is traveling at a constant speed of 19.3 m/s . Initially, the car is also traveling at a speed 19.3m/s, How much time is required for the car to pass
In a constant pressure calorimeter, (1.4250x10^2) mL of a 1.00 M metal chloride solution (MCl2(aq)) were added to (1.4250x10^2) mL of a 0.500 M potassium sulfate solution.
The plumbing in an old house uses lead pipes (which are now considered hazardous). what is the change in the length of the pipe
What is the pH of Na3PO4. While this is a triprotic species, you may ignore two of the Ka's and concentrate on the single Ka that is appropriate for this problem.
A copper-bottomed kettle, its bottom 24 cm in diameter and 3.0 mm thick, sits on a burner. What is the temperature of the bottom surface of the kettle
A projectile is fired at an angle of 45° with initial kinetic energy E0. At the top of its trajectory, What is the speed of the first fragment
Integrate the expression b = 1/V (derivative of V / derivative of T) at constant pressure, assuming that b is independent of temperature. By doing so, obtain an expression for V as a function of T a
A dog running in the +y-direction at 7.0 m/s hears its owner call from behind, Compute the dog's change in velocity
You drive west at 70km/h for 24 min , then follow a road that goes 38 degrees south of west, driving at 96 km/h for another 36 min. Find your average velocity for the trip