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Consider the equilibrium for the reaction: N2 O4 (g)<--> NO2 (g) delta H o = 58.0 kJ Indicate in which direction the equilibrium will shift under the following conditions.
A gorilla weighs 8.00*10^2N and swingsfrom vine to vine. as the gorilla grabs a new vine, both vines make an angle of 30.0 degrees with the vertical. in such a condition of state of equilibrium, wh
A 0.2356g sample containing only HCL and BaCl2 yielded 0.4637g of dried AgCl. Calculate the percent of each halogen compound in the sample.
A 3.35 kg steel ball strikes a wall with a speed of 10 m/s at an angle of 60 degrees with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.2
A child pushes a merry-go-round from rest to a final angular speed of 0.50 rev/s with constant angular accelaration.In doing so,the child pushes the merry-go-round 2.0 revolutions.What is the angul
Haemoglobin is the protein that transports O2 through the blood from the lungs to the rest of the body. In doing so, each molecule of haemoglobin combines with four moleculres of O2. If 1.00g haemog
What is the concentration of hydrochloric acid in a solution prepared by mixing 0.250 L of 10.0 mol L-1 hydrochloric acid with enough water to make the volume up to 5.00L?
A hawk flies in a horizontal arc of radius 12.9 m at a constant speed of 4 m/s. It then increases it's speed at the rate of 1.55 m/s2. Find the magnitude of acceleration under these new conditions.
A student makes a simple generator by using a single square loop 24 cm on each side. The loop is then rotated at a frequency of 60 Hz in a magnetic field of 0.044 T. What is the maximum emf output?
Reactants A and B are present in a closed container. Predict how each of the following changes to the reaction system will affect the rate and rate constant. EXPLAIN
A solution of Fe(III) ions is formed by first dissolving 5.58g of pure iron wire in excess hydrochloric acid and then making the final volume of the solution to 1.00L by adding an appropriate amount
Calculate the mass of one oxygen atom and determine the number of oxygen atoms in a 10.00g sample of the element (recall Avegadro's number is 6.022 * 10^23).
Your reaction time before stepping on the brakes is 0.50 , and the maximum deceleration of your car is 12 . How much distance is between you and the deer when you come to a stop? What is the maximum
A 4.0 syringe has an inner diameter of 6.0 , a needle inner diameter of 0.27 , and a plunger pad diameter (where you place your finger) of 1.2 . A nurse uses the syringe to inject medicine into a p
A ceiling fan with 84cm diameter blades is turning at 61rpm. Suppose the fan coasts to a stop 25 after being turned off. What is the speed of the tip of a blade 10 s after the fan is turned off?
Radon (222Rn), a dense, noble gas, is commonly found in basements in some areas of the United States. Radon is a daughter of 238U decay. Which statement about radon is not correct?
A 7.0 kg bowling ball moves at 2.25 m/s. How fast must a 2.00 g Ping-Pong ball move so that the two balls have the same kinetic energy?
In the afternoon, the decibel level of a busy freeway is 80 dB with 100 cars passing a given minute. Late at night, the traffic flow is only 5 cars per minute. What is the late-night decibel level?
A thin 320 g disk with a diameter of 5.20 cm rotates about an axis through its center with 0.705 J of kinetic energy. What is the speed (in m/s) of a point on the rim?
A 2.0 {rm kg} wood block is launched up a wooden ramp that is inclined at a 35 degree angle. The block's initial speed is 10 {rm m/s}. What vertical height does the block reach above its starting po
Suppose that a rock contains 0.539 mg of 206Pb. If the current rock specimen contains 2.035 mg of 238U, how many mg of 238U were in the original rock specimen?
A 90-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 795 N, and his speed at the bottom of the pole is 3.8 m/s. How far did he slid
What volume and mass of steam at 100.°C and 1.00 atm would, during condensation, release the same amount of heat as 100. cm3 of liquid water during freezing?