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Two masses (m1 = 8.00 kg and m2 = 10.0 kg) are connected by a massless string which runs across a massless, frictionless pulley. The heavier mass is also connected to a spring, which is attached to the ground and has a spring constant of k = 500 N/m. Both masses are initially placed at the same height. When the masses are released, m2 begins to fall and compresses the spring.
(a) How far do the masses fall before coming to a stop?
(b) What is the instantaneous power delivered to the system by the spring when m2 has fallen half of the distance it will fall before coming to a stop?
Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution of 5.00 g of lauryl alcohol in 0.100 kg of benzene freezes at 4.1.
Gallium consists of two isotopes of masses 68.95 amu and 70.95 amu with abundances of 60.16% and 39.84%.
Give equations for the reaction of aspirin with the following: a. acetyl chloride/ pyridine b. methanol/HCl/heat c. sodium bicarbonate, room temperature d
Calculate the percent yield of this organic reaction- C7H6O2------->C12H16O2. Molecular weight of C7H6O2 is 122.12 amount used 100g, Molecular weight of C12H16O2 192.25 amount recovered 125.9 g
In plating the Zn onto the nail, it required 3.0v. If you were plating Ag onto the nail, do you think that 3.0v will work? If not, should the Ecell be higher or lower. Explain.
Write the half-reactions for the silver-silver chloride and calomel reference electrodes.
A titration of 200.0 mL of 1.00 M H2A was done with 1.10 M NaOH. For the diprotic acid H2A, Ka1 = 2.5 × 10-5, Ka2 = 3.1 × 10-9. Calculate the pH after 600.0 mL of 1.10 M NaOH have been added.
predict the ratio of the two masses of oxygen that combine with a fixed mass of lead to form PbO and PbO2? PbO:PbO2 oxygen mass ratio= ?/?
If one gallon of paint can cover a square room as well as ceiling with walls that are 9.74 feet high and 9.74 long, Explain what is the thickness of the paint (in micrometers)
50.0 ml of 2.00M H2SO4 react with 75.O ml of 2.00M NaOH.Identify the limiting and excess reactants.
What is the pressure exerted by some nitrogen gas collected in a tube filled with water on a day when the room temperature is 18.0ºC
A flask of Argon gas is connected to the left arm of a manometer. The Hg level is 76.1cm. The right arm of the manometer is open to the atmosphere and has a Hg level of 63.9cm. The atmospheric pressure of the lab is 0.679 bar. What is the pressure..
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