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A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 15 rpm in 10.0 s. Assume the merry-go-round is a uniform disk of radius 2.5 m and has a mass of 560 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge. Calculate the torque required to produce the acceleration, neglecting frictional torque. What force is required at the edge?
170mL of an HCl solution with pH of 2.80 is added to 200mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution
Li is in row 2 of the periodic table, Na is in row 3, and K is in row 4. How do their row numbers affect how their electron configurations end.
Which of the italicized items are physical changes and which are chemical changes?
If you add 3mL of water to 1mL of NADH, mix as well as get an absorbance of 0.2, Explain what is the concentration of the original NADH solution
for the titration of 50.0 ml of 0.020 m aqueous salicylic acid with 0.020 m kohaq calculate the ph after the addition
If the tosylate of (2S,3S)-3-phenylbutan-2-ol undergoes an E2 removal on treatment with sodium ethoxide. Depict the structure of the alkene that is produced.
X-ray radiation is associated with transitions in which inner core electrons are being ejected from the atom. Suppose a photon of wavelength 240 pm ejects an electron from the inner shell of an atom and it emerges with a speed of 13.0 Mm s-1.
determine the enthalpynbsp for the given reaction as cs2 l 2 o2 g rarr co2 g 2 so2 g if given cs o2g rarr co2g
Calculate the final temperature of a mixture of 170.0 g of ice initially at -7.0 degrees C and 318.0 g of water initially at 94.0 degrees C.
Determine the mass of a mixture of 1.33x10^24 formula units of Sodium sulfate, 1.500 moles of Water and 3.77g of silver chloride?
Identify two types of nuclear reactions in which the equation E = mc2 applies.
Draw the structure resulting from a reaction of a) diborane (B2H6) followed by b) alkaline hydrogen peroxide (NaOH/H2O2) with the following alkene.
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