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a 5000g sample of pesticide was decomposed with metallic sodium in alcohol and the liberated chloride ion was
what happens when an inert gas is added to an equilibrium state with out change in pressure
a chemist creates a buffer using benzoic acid ka63010-5 and sodium benzoate by mixing 5000ml of 0950m benzoic acid with
a horizontal 790-n merry-go-round of radius 160 m is started from rest by a constant horizontal force of 55 n applied
a piston-cylinder system has initial volume 10 liters and contains ideal gas at 300k and 1 atm with cv25r the piston is
a 02570g of pure sulfamic acid hso3 nh2 is neutralized by a koh solution a 2570 ml of koh was added to the solution
a capacitor is connected across the terminals of an ac generator that has a frenquency of 430 hz and supplies a voltage
a compound lens system consists of two converging lenses one at x -200 cm with focal length f1 100 cm and the other at
nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation n2g 3h2g 2nh3g
a certain material is in a room at 27c if the absolute temperature k of the material is tripled its resistance also
what is the normal boiling point in of a solution prepared by dissolving 150g of aspirin acetylsalicylic acid in 7500g
a can of coke moving 166 ms towards the rightthe positive direction collides with a can of pepsi moving 367 ms toward
a two converging lenses separated by a distance of 405 cm are used in combination the first lens located to the left
explain how you would prepare 5000ml of a solution that is 0100m h2so4 from concentrated 180m h2so4 which is a liquid
a nonreflective coating n 131 covers the glass n 152 of a camera lens assuming that the coating prevents reflection
what is the freezing point in of a solution prepared by dissolving 480 of in 110 of water the value of for water is 186
a person who weighs 686 n steps onto a spring scale in the bathroom and the spring compresses by 0608 cma what is the
when 4625 j of heat are added to a 013-m-long silver bar its length increases by 459 10-3 m what is the mass of the
a particular reaction is spontaneous at 450k the enthalpy change for the reaction is 345 kj what can you conclude about
for a particular reaction it was found that the reaction rate was 16 times faster at 35oc than it was at 25oc it was
a mass is at rest on a spring in a liquid with density 1500kgm3 the spring has a force constant of 200nm and it has
a single 63 muf capacitor is connected across the terminals of a 60 hz voltage source and a current of 20 ma is
a somebody puts an expandable balloon on the opening of the bottle without any gas escaping the outside pressure is
the longest string a thick metal wire on a particular piano is 30 m long and has a tension of 3000 n it vibrates with a
for the following reaction cog 2h2g ch3ohga what is the value of the equilibrium constant of the reaction at