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The original volume [before the 0.406 mole C(g) begins to decompose] is 10.00 L. What is the volume in the cylinder at equilibrium?
A uniform disk turns at 3.8 around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk. They th
An outfielder throws a 0.150 kg baseball at a speed of 56.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?
A sample of impure sulphide contains 42.34% of Zn. Find the percentage of pure ZnS in the sample .
Sam, whose mass is 78.0 kg, takes off down a 52.0 m high, 8.00^circ slope on his jet-powered skis. The skis have a thrust of 220 N. Sam's speed at the bottom is 45.0 {rm m/s}. What is the coefficie
For the nitrogen fixation reaction 3H2(g) + N2(g) <--> 2NH3(g), Kc = 6.0 × 10-2 at 500°C. If 0.250 M H2 and 0.050 M NH3 are present at equilibrium, what is the equilibrium concentrat
A student has two ramps, both of which are at an angle 34°. Ramp 1 is frictionless and ramp 2 has friction. The student also has two blocks, one for each ramp. She pushes the blocks up the ramps
How much heat is required to melt 11 percent of a 3.20×105 metric-ton iceberg? One metric ton is equal to 103 kg. Assume that the iceberg is at 0°C.
A sample of H2O with a mass of 46.0 grams has a temperature of -58.0 C How many Joules of energy are necessary to heat the ice to 0 C ( Use 2.1 J/g C for the specific heat of ice).
using your knowledge of mole calculations and unit conversions determine how many atoms there are in 1 gallon. Assume that the molecular formula for gasoline is C6H14 and that the density of gasolin
A thin 2.5kg box rests on a 5.5kg board that hangs over the end of a table. The portion of the board on the table measures .30m and the portion of the table measures .20m. How far can the center of
A crate is pulled to the right(positive x axis) with a force of 82.0 N, to the left with a force of 115 N, upward with a force of 565 N, and downward with a force of 236 N. Find the magnitude and di
A second order reaction of type A+B=P in which the reactants were present initially at a concentration of 0.02M is found to be 25% completed in 50minutes, calculate the rate constant and the half li
The kinetic energy of the can andd. the gravitational potential energy of the can-earth system 0.200s before the can reaches the ground?
A small, 300 g cart is moving at 1.50 m/s on an air track when it collides with a larger, 2.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s. What is the speed of the lar
An experiment shows that a 153-mL gas sample has a mass of 0.171 g at a pressure of 761 mm Hg and a temperature of 32oC. What is the molar mass of the gas? R=0.0821 L atm / mol K.
A rifle is aimed horizontally at a target 45m away. The bullet hits the target 1.5cm below the aim point. what is the time takes and the speed?
At a distance of 4.32 m from a siren, the sound intensity is 3.75 x 10-2 W/m2. Assuming that the siren radiates sound uniformly in all directions, find the total power radiated.
A 375 mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286 mL and the pressure increases to 901 torr, what will be the
What minimum force (assumed constant) is needed from the catapult that is used to help launch the jet? Assume that the catapult and the jet's engine each exert a constant force over the 88.9 m dista
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in 3.80 liters of water? (1 liter is equivalent to 1.00 x 10-3 m3) (b) What
A small city requires about 17 of power. Suppose that instead of using high-voltage lines to supply the power, the power is delivered at 120 .Assuming a two-wire line of 0.40 -diameter copper wire,
What is the force vec F on the 1.0{rm nC} charge in the middle of the figure due to the four other charges? Give your answer in component form.
A balloon with an initial volume of 2.3L at a temperature of 279K is warmed to 406K. What is its volume at the final temperature?
The coefficient of kinetic friction between the 50-kg block and incline is 0.250. Determine the change in the kinetic energy of the 50-kg block as it moves from A to B, a distance of 20.0 m.