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The wake of a speedboat is 17â?? in a lake where the speed of the water wave is 2.8km/h. What Is the speed of the boat
what is the total molar concentration of all the ions in 0.030 M solutions of the following salts in water? a) 0.030 M KCl = ________ M ions b) 0.030 M CuSO4 = _____ M ions c) 0.030 M CaCl2 = ______
A student doing an experiment pours 0.160kg of heated copper shot into a 0.355-kg aluminum calorimeter cup containing 0.240kg of water. What was the initial temperature of the shot
It takes 2.7×106J of heat to bring a quantity of water from 24?C to a boil. What is the mass of water
A gas mixture contains oxygen and carbon dioxide. The partial pressure of oxygen is 0.450 atm. The partial pressure of carbon dioxide is 675 mm Hg. If argon gas added to the mixture causes the total
For 2.25 moles of an ideal gas, Pext=P=200x10^3 Pa. The temperature is changed from 122 C to 28.5C and Cv=3R/2. Calculate the q, w, delta U and delta H for an isochloric process.
A student ate a Thanksgiving dinner that totaled 3000Cal . He wants to use up all that energy by lifting a 30-kg mass a distance of 1.0 m. How many times must he lift the mass
A space of 100 cm3 and one of 300 cm3 seperated by a capillary tube, in which a tap is arranged, connected. How big is the pressure in the related areas
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are
A 72 kg meteorite buries itself 5.0 m into soft mud. The force between the meteorite and the mud is given by , What was the speed of the meteorite
A 18.0 kg block is being pushed up a ramp by a force FP = 150 N acting horizontally. Determine the work done on the block by the frictional force
In an adiabatic compression if one mole of an ideal gas with a Cv=5R/2, the temperature rises from 293 K to 325 K. Calculate the heat, work, change in enthalpy and change in internal energy
A 55 kg block of ice slides down a frictionless ramp that is 2.0 m long and 0.91 m high. Find the force exerted by the worker
For each of the following states described in the following list, calculate the final pressure, as well as q, w, ?U, and ?H. a) the gas is expanded isothermally and reversibly until the volume doubl
At 25 °C and 765 Torr, carbon dioxide has a solubility of 0.0342 M in water. What is its solubility at 25 °C and 1470 Torr
What is the maximum work that can be obtained from a 340 L tank of compressed air at 4350 PSI
A solution of 75.0 g of benzene (C6H6) and 75.0 g of toluene (C7H8) has a total vapor pressure of 80.9 mmHg at 303 K. Another solution of 100.0 g benzene and 50.0 g toluene has a total vapor pressur
A steel beam 10m long is installed in a structure at 15?C, What is the beam's change in length when the temperature reaches 50?C
What statement below best describes the graph representing the integrated 1st order rate law. plot of ln[a] vs t having a straight line negative slope equal to -k
If 10.00 mL of 0.050 M KI solution is mixed with 40.0mL of other reagents what would be the the diluted concentration of KI
A solution of ammonia and water contains 2.70×1025 water molecules and 8.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. What is the corresponding change on the Fahrenheit scale
The balanced equation for trans-1,2-dibenzoylethylene in ethanol to give the product cis-1,2-dibenzoylethylene
A series RLC circuit consists of a 100 ? resistor, a 0.190H inductor, and a 42.0 ?F capacitor. It is attached to a 120 V/60 Hz power line. What is the average power loss