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The pressure in a constant-volume gas thermometer is 0.700 atm at 100°C and 0.512 atm at 0°C. (a) What is the temperature when the pressure is 0.0540 atm?
Another wood sample prepared from an object recovered at an archaeological excavation gives a decay rate of0.118 disintegration per second per gram of the sample. What is the age of the object?
Each square meter of the surface of a sheet of paper has 2.58×10^6 excess electrons. Find the magnitude of the electric field at a point which is a distance of 5.15m from the surface of the sh
An excited state of the Li atom has electrons occupying two spatial orbitals: 1S and 2Px. What are all the possible electronic wave functions of the excited Li? Must pay attention to spin states and
An experimental measurement has a result 4.95±.01, and a predict value of 5.00. What is the percentage deviation between the two?
A certain heat pump has a COP of 5.1 while operating in both heating and cooling mode. Suppose the heat pump operates in heating mode on a cold day.
Daniel weighing 201lb decides to climb a mountain weighing5010m. He took nutrition bars with him such that each 100-g barcontains 10g of fat, 40 g of protein and 50g of carbohydrates.
Neptune is approximately a sphere of radius 2.21 x 107 m. (a) What is its circumference in kilometers?
A family heats their house with propane gas. The gas companyreports that for an average home it takes 41.589 kJ of heat toraise the temperature of the air inside the house from 60.0 oF to 75.0&
If certain car has a rated mileage of 30.0 miles per gallon, how many liters of carbon dioxide gas is generated when the car hasbeen driven a distance of 16.0 miles?
1. Calculate the work done by a 47N force pushing a .025kg pencil .25m against a force of 23N.
A lead bullet initially at 33°C just melts upon striking a target. Assuming that all of the initial kinetic energy of the bullet goes into the internal energy of the bullet to raise its temperat
The rate of a chemical reaction increased by a factor of 3.58 when the temp increased from from 35*C to 48*C. if the reaction temperature increased from 48*C to 70*C.
If 400 kcal is added to a gas that expands and does 1000 kJ of work, what is the change in the internal energy of the gas?
A calorimeter of negligible mass contains 1100 g of water at 303 K and 41 g of ice at 273 K. Find the final temperature T.
Zinc Sulfide is treated with sulfuric acid, leaving a solution with some undissolved bits of material and releasing hydrogen sulfidegas. If 10.8g of zinc sulfide is treated with 50.0ml of sulfuricac
A 240 g piece of ice at 0°C is placed in 510 g of water at 23°C. The system is in a container of negligible heat capacity and is insulated from its surroundings. (a) What is the final equili
During his many appearances at the Tour de France, champion bicyclist Lance Armstrong typically expended an average power of 400 W, 5.0 hours a day for 20 days. What quantity of water, initially at
Why might a poor yield of cyclohexene be realized if the dehydration that you did was carried out with HCl instead ofH3PO4 as the acid catalyst?
A hotel elevator ascends 200 m with a maximum speed of 5.2 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. (a) How far does the elevator move while accelerating to full spe
A radioactive isotope of phosphorous has a half-life of 14.3days. What fraction of the initial sample of the phosphorous radioisotopewill remain after 95 days?
Two containers are at the same temperature. The first contains gas with pressure p1, molecular mass m1, and root-mean-square speed vrms1. The second contains gas with pressure p2, molecular mass m2,
Assuming that gasolineis pure octane, C8H18, and has a density of0.703 g/ml, how many liters of CO2 gas will be producedat STP from the consumption of 3.20 gallons of gasoline ?
A model rocket is launched straight upward with an initial speed of 50.7 m/s. It accelerates with a constant upward acceleration of 2.10 m/s2 until its engines stop at an altitude of 133 m. What is t
A rock is dropped from rest from a height h above the ground. It falls & hits the ground with a speed of 11m/s. From what height should the rock be dropped so that its speed on hitting the groun