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what is hte mass in mgs of solute in 737 mL of a solution that contains 6.38 ppm of Pb(NO3)2 and please explain work
Consider a balloon being filled up with oxygen. You have approximately 30 moles of oxygen gas in this balloon with volume 1.3 m^3. compute the temperature of the molecules
Starting from the ideal gas equation, show how you can calculate the molar mass of a gas from knowledge of its density.
A block of wood, with density 780 kg/m3 has a cubic shape with sides .0330 m long. What is the mass of the lead
If an ideal gas is expanded reversibly, the heat absorbed qrev, can be expressed by the differential dqrev = Cv dT + P dV, Where Cv is a constant (called heat capacity at constant volume). Show that
You have a string with a mass of 0.0133 kg. You stretch the string with a force of 9.81 N, giving it a length of 1.87 m. find the wavelength of the standing wave you create in the string
For an ideal gas the pressure P, the volume V and the temperature T are related by the ideal gas equation of state, PV = nRT, where R is the general gas constant and n is the number of moles. Consid
The saturated vapor pressure of mercury is 0.0020 mmHg at 300 K and the density of air at 300 K is 1.18 g/L. (a) Calculate the concentration of mercury vapor in air in mol/L. (b) What is the number
Calculate the magnitude and direction of the transverse horizontal force acting on the train
You have a 1.91-m-long stretched string with a mass of 19.3 g. When you oscillate the string at 440 Hz, obtain the tension in the string
A certain mixture of He and Ne in a 356 cm3 bulb weighs 0.1480 g and is at 20.0 oC and 748 torr. Find the mass and mole fraction present.
A point charge causes an electric flux of -760 N·m2/C to pass through a spherical Gaussian surface of 15.0 cm radius centered on the charge. how much flux would pass through the surface
The measured density of a certain gaseous amine at 0 C as a function of pressure is: P(atm) 0.200 0.500 0.800
what is the mass in grams of A) 6.21 mol of KBr B) 10.2 mmol of PbO C) 4.92 mol of MgSO4 d) 12.8 mmol of Fe(NH4)2(SO)4 6H2)
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF and the other end in water at 212oF. what is the thermal conductivity of this metal
A tank containing liquid butane and one containing liquid propane are sitting adjacent to one another. Each tank is equipped with a regulator with a pressure gauge
A 65.0 kg object slides down a 30o angle slope from rest at a height of 15.0 m. The coefficient of kinetic friction between the object and the slope surface is 0.15. What is the object's speed at th
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.03 Earth years in its circular orbit around its sun, Find the radius of the exoplanet's orbi
How much energy is required to vaporize 145g of butane at its boiling point? The heat of vaporization for butane is 23.1 kJ/mol
a 66.0-kg woman in an elevator is accelerating upward at a rate of 2.8m/s^2. What is the net force acting on the woman
If the energy that goes into evaporating one kilogram of water from Lake Michigan at 11.0 oC were used instead to raise, how high (in m) would it be lifted
The vapor pressure of water at this temperature is 23.76 Hg. The piston is depressed at constant temperature so that the gas is compressed to a volume of 2.67 L. What is the vapor pressure in the co
During a thunderstorm, you see a flash of lightning hit the Earth far away from your location. You look at your watch and hear the thunder exactly 10 s after. How far away did the lightning strike t
A buzzer generates a sound by vibrating with a frequency of 440 Hz in air. If this buzzer is placed under water, What frequency would a fish hear
A gas expands in volume from 34.9mL to 74.1mL at constant temperature. Calculate the work done (in joules) if the gas expands against a constant pressure of 2.1atm. Enter your answer in scientific n