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A sealed cubical container 27.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 23.0°C. Find the force exerted by the gas on one of the walls of the contain
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 2.61 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3) (b
At 273 K and 1.00*10^-2 atm the density of a gas is 1.24*10^-5 g/cm^3 a) find Vrms for the gas molecules b)find the moloculer weight of the gas and identify it.
A scientist has constructed a secret peptide to carry a message. You know only the composition of the peptide, which is six amino acids long. It contains one serine S, one threonine T, one cysteine
The spectrophotometer is now used to measure the CO concentration in another gas sample. The measurement is 56.9 ppm. How should this measurement be expressed? Round your final answers to one decima
A gas is compressed at a constant pressure of0.320atm from a volume of 8.00L to 4.00 L. In the process, 400 J of heat energy flows out of the gas. What is the change in its internal energy?
0.46mol of argon gas is admitted to an evacuated 30cm^3 container at 60C. The gas then undergoes an isochoric heating to a temperature of 500C. What is the final pressure of the gas?
If both the pressure and volume of a given sample of an ideal gas are doubled, what happens to the temperature of the gas in Kelvins?
In a certain particle accelerator, protons travel around a circular path of diameter 18.0 m in an evacuated chamber, whose residual gas is at 290 K and 1.56 x 10-6 torr pressure. (a) Calculate the n
(a) By how much did the internal energy of the gas change? If the quantity of gas present is 2.3 x 10-3 mol, find the molar specific heat of the gas at (b) constant pressure and (c) constant volume.
The frequency is either 444 or 436 Hz, and the property is the Doppler Effect, Fundamental Frequency, Harmonics, Speed of Sound in Air. (I think it's Doppler Effect.)
Water is pumped into a storage tank from a well delivering 15.0 gallons of water in 34.0 seconds through a pipe of 1.00 in.2 cross-sectional area. What is the average velocity of the water in the p
An object weighing 335 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. Immersed in oil, the object weighs 285 N. (a) Find the density o
How much energy is lost through the walls of the hot water heater in one week? (Assume thinner surface of the heater is 90 C and the outer surface is 27 C.)
What is the value of the acceleration of gravity at that altitude as a percentage of the acceleration at the surface of the earth?
Calculate the activity of Uranium-238 in 100 grams of uranium ore containing 5 weight percent U308. What is the expected activity of Uranium-234 in the ore?
Question: How many "average" collisions with hydrogen nuclei would a 1 MeV neutron need to undergo before it becomes a "slow" neutron?
Calculate the pCi of K-40 per gram of human body mass. Assume the human body is 0.2% potassium, by weight, the isotopic abundance of K-40 is 0.0117% in natural potassium, and the gram-molecular wei
A hospital needs 1 millicurie of a radioactive pharmaceutical with a half-life of 12 hours. If delivery time takes 3 days, what activity must be shipped to the hospital by the supplier? How many mi
If the local atmospheric pressure is 101 kPa and acceleration due to gravity, g is 9.81 m/s^2, determine the height of the mercury column in a barometer, L in "mm Hg" and in "inch Hg".
A 75.0 kg patient is running a fever of 105°F and is given an alcohol rub to lower the body temperature. If the specific heat of the human body is approximately 0.830 kcal/kg°C and the heat
Given the heat of fusion and specific heat of this metal is 80.18 kJ/kg and 373 J/kg°C, respectively, determine the amount of thermal energy absorbed by the sample before reaching thermal equili
Assuming no heat loss to the surrounding environment, determine the minimum duration of time necessary for a 100 W aquarium tank heater to raise the temperature of 20.0 gallons of water by a differ
Knowing that the tension in the cable is 1125N(the force in BG=BH=1125N), determine the moment about the digonal AD of the force exerted on the frame by the BH cable?