A sample of an unknown gas effuses in 119 min an equal
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas?
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What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
You throw a ball with mass 0.40 kg against a brick wall. It hits the wall moving horizontally to the left at 30. m/s, find the average horizontal force the wall exerts on the ball during the impact
Now suppose the gliders in the previous problem collide completely inelastically so that they stick together rather than rebounding off each other after they collide. Compare the initial and final kinetic energies
A 0.100 mA electron beam with kinetic energy 54 eV enters a sharply defined region of lower potential where thekinetic energy of the electron is increased by 10 eV. What current is reflected at the boundary
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas
In an RLC circuit, the following three elements are connected in series: a resistor of 45.0 ?, a 21.0-mH inductor, and a 0.450-µF capacitor. Find the power factor for the RLC series circuit
A camera with interchangeable lenses is used to photograph a distant object. The angular size of the object is 27 degrees. What is the longest focal length lens
Discuss your ideas for how security in a courthouse or justice center needs to be managed when proceedings are going on not only in courtrooms but also in other areas of the facilities, such as vacant jury rooms, attorney conference rooms, benches
Provide three balanced chemical equations that will precipitate Pb2+ from a solution. Exclude substances containing chloride or chromate ions
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