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The two shafts of a Hooke's coupling have their axes inclined at 20°.The shaft A revolves at a uniform speed of 1000 rpm. The shaft B carries a flywheel of mass 30 kg. If the radius of gyration of the flywheel is 100 mm, find the maximum torque in shaft B
Predict the shape and polarity of each of the following molecules. Assume all bonds are polar: a) a central atom with four identical bonded atoms and no lone pairs. b) a central atom with three identical bonded atoms and one lone pair. c) a centra..
How many moles of oxygen are consumed when 100. L of dinitrogen pentoxide are produced in the following equation 2 N2 + 5 O2 ---> 2 N2O5
Consider the following reaction- N2 (g) + O2 (g) = 2NO (g)Given that delta G for the reaction at 25 degrees Celsius is 173.4 kj/mol calculate the standard free energy formation of NO
Another bottle holds 120 tablets, each containing 180 of aspirin, and sells for $3.95. Calculate the value in milligrams of aspirin per dollar.
Question- A mixture of nitrous oxide (N2O) and O2 gas has a density of 1.86 g/L at STP. What is the composition of the mixture in mole %? hint- think about weighted averages analogous to what we do to find isotopic mass
Determine the mass of cupric sulfate penthahydrate needed to make 250mL of an aqueous 0.5 molar solution
Question- At a given temperature, you have a mixture of benzene (vapor pressure of pure benzene = 745 torr) and toluene (vapor pressure of pure toluene = 290 torr). The mole fraction of benzene in the vapor above the solution is 0.590. What is the..
A plot of 1/[A] vs time is linear as well as the slope line is 0.872 if the half life of the reaction is 37.5 define how much of the sample remains after one minute
a first order reaction has an arrhenius constant for the reactionis 4.8 x 1011 sec -1 and an activation energy of 61.4
suppose that you added 35.0 g of water at 99.50 degrees celsius to a calorimeter containing 150 g of water at 23.0
Write a chemical equation for Ca(OH)_2 (aq) showing how it is an acid or a base according to the Arrhenius definition.
a sealed flask contains 0.65 g of water at 28 circ rmc. the vapor pressure of water at this temperature is 28.36 rm
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