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vector a has polar coordinates 5 60oand vector b has polar coordinates 3135o what the scalar product of the two
a boy pushes a box that has a mass of 355 n up an incline ifthe boy exerts a force of 67 n along the incline what is
two 150-v batteries-with their positive terminals in thesame direction-are inserted in series into the barrel of a
how many moles of each reactant are used in the epoxidation of cholesterol assume the 3-chloroperoxybenzoic acid is 80
compare the amount of energy released by the complete combustion of 1 gallon of ethanol with the amount of energy
a 65 g bullet traveling at 290 ms penetrates a block of ice at 0degc and comesto rest within the ice assuming that the
a dewar flask filled with 100 l of liquid nitrogen is allowed to completely evaporate and warm up to room temperature
write a balanced equation for the reaction between aqueous solutions of calcium chloride cacl2 and sodium carbonate
the primary coil of a transformer makes 40 turns around the iron core and the secondary coil of that transformer makes
acetone ch3coch3 is a nonelectrolyte hypochlorous acid hclo is a weak electrolyte and ammonium chloride nh4cl is a
a single square loop of wire has a resistance of 2 ohm the lengthof each side of the square is 05m a magnetic field
a 60kg including equipment olympicski-jumper starts with pushes off from the starting gate agiving her an initial
given reaction 2nh3g 3cl2g ---gt n2g 6hclg you react 50 l of nh3 with 50 l of cl2 measured at the same conditions in
how many grams of methane ch4g must be combusted to heat 110 kg of water from 260 c to 890 c assuming h20l as a product
a car is towing a boat on a trailer the driver starts from restand accelerates to a velocity of 192 ms in a time of 27
some of the moles of hcl you add will react with sodium carbonate in the first reaction and the rest will react with
a viewing screen is separated from a double-slit by 12m thedistance between the two slits is 0030mm the second order
two moles of sucrose are dissolved in eight moles of water assume that the solution follows raoults law but that the
calculate the ph of the following the solution prepared by mixing 2500ml of 0100m malonic acid with 1500ml of 016667m
a canoe heading 30 degrees west of north is being paddled at a rateof 7 mih the current is pushing a the canoe 20
describe how to prepare a 50000ml of a ph 1000 100m carbonate buffer using the following reagents nahco3 fm 84007 gmol
a the xenate ion xeo3oh- slowly decomposes in alkaline solution to give perxentate xeo64- and xenon as the only
when 50g of koh is added to 100ml of water the temperature of the solution increases by 3c assume the density of the
it takes 105 j of work to move21c of charge from a positive plate to anegative plate what voltage difference exists
determine the enthalpy change when 235 g of carbon is reacted with oxygen according to the reaction cs o2g co2g delta