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a 955 gram sample of solid sodium hydroxide dissolves in 1000 grams of water in a coffee-cup calorimeter the temperate
a system consists of three particles each of mass 585 g located at the corners of an equilateral triangle with sides of
an unknown substance has a mass of 0125 kg and an initialtemperature of 950degc the substanceis then dropped into a
the escape velocity of a bullet from the surface of planet y is 1727 ms calculate the escape velocity from the surface
your task is to design a boiler to produced saturated steam at 300 degc because energy costs money you decide to use
kc35x10-2 if you start with 150 ml of a 0895 m solution of naio4 and the dilute it with water to 260 ml what is the
a wave is described by the equation y 290 sin930t where y is in meters and t is in seconds what is the frequency in hz
determine the name of cl2oplease understand that the 2 is meant to appear smaller but i did not know how to show that
a 100 g aluminum calorimeter contains 250 g of water the two substances are in thermal equilibrium at 10degc two
when aqueous solutions of cobalt ii chloride and sodium hydroxide are mixed what precipitate
the gas is first cooled at constant volume until it reaches its final pressure it is then allowed to expand at constant
a 37 kg block of copper at a temperature of 86degc is dropped into a bucket containing a mixture of ice and water whose
calculate the ph after 0015 mol solid naoh is added to 100 l of a solution containing 0050 m propanoic acid hc3h5o2 ka
a 25 g glass tumbler contains 340 ml of water at 24degc if four 20 g ice cubes each at a temperature of -3degc are
consider the reaction of so3 in equilibrium with so2 and o2shown below what will happen to the equilibrium if the
an ideal heat engine absorbs 965 kj of heat and exhausts 798 kj of heat in each cyclewhat is the efficiency of the
the first-order rate constant for the decay of the radioactive isotope carbon-14 is 12 x 10-4 year-1 what fraction of
calculate the necessary amounts of solutes and solvents to make a 4l bottle of antifreeze that will cause a 35 degree
two blocks of mass m and 4m are joined by a rigid rid of negligible mass the centers of mass of the blocks are
a compound contains only carbon hydrogen nitrogen and oxygen combustion of 0314 g of the compound produced 0426 g co2
an alien spaceship traveling at 0610c toward the earth launches a landing craft the landing craft travels in the same
a concert loudspeaker suspended high off the ground emits 38w of sound power a small microphone with a 10 cm2 area is
a 0250 kg mass is moving on the end of a spring k 350 nm and is damped by a force fx -bvxa if the constant b 0860 kgs
a thin 17-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod there are
a ray of light is traveling in a glass cube that is totally immersed in water you find that if the ray is incident on