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a sealed tube contains 166 atm pcl5 at 500 k the pcl5 decomposes until equilibrium is established the equilibrium
an apparatus shown in the the figure below is designed to study insects at an acceleration of magnitude 958 ms 978g
a buffer is prepared by dissolving 250 g of sodium acetate nac2h3o2 in 120 l of a solution of 0560 m acetic acid
the system is being designed with 18 solec modules two parallel-series arrays of 9 modules in eachdesign wiring from
a 1300 kg car takes a 52 m radius unbanked curve at 15 ms what is the size of the friction force on the
air molecules in a warm room 27degc 300 k typically have speeds of about 500 ms 1100 mph why is it that we are
a billiard ball will stop short when it collides head-on with a ball at rest the ball cannot stop short however if
in a head-on collision a car stops in 027s from a speed of 24ms the driver has a mass of 61kg and is fortunately
how long would it take to count out 1 billion tiny invisible objects yes invisible from a bottle of these objects if
a 150-kg block of ice at 0 degc melts to liquid water at 0 degc inside a large room that has a temperature of 200degc
what is the ratio of the rate of effusion of ammonia nh3 to that of hydrogen chloride
a sample of carbon dioxide has a volume of 575 ml at 752 torr and 22degc what is the mass of carbon dioxide in this
an object at rest on a flat horizontal surface explodes into two fragments one seven times as massive as the other the
oxygen is prepared by heating potassium chlorate with manganese dioxide as a catalyst 2kclo3s2kcls302g how many grams
a an ideal gas occupies a volume of 22-cm3 at 20degc and atmospheric pressure determine the number of molecules of gas
most gases are stored and transported at high pressures a common laboratory cylinder of methane has a volume of 490 l
gas is confined in a tank at a pressure of 129 atm and a temperature of 283degc if two thirds of the gas is withdrawn
in the reaction cdcuso4cdso4cu what is the reduction half reaction what is the reducing agent explain your
first prepare a stock solution that is 100 x 10-2 m in phosphate ion how many g of na3po4 would you add to a 100 ml
a 20cm length of 026mm diameter nichrome wire is welded into a circular loop the loop is placed between the poles of
two strings equal in length and made of the same material are subjected to tensions in the proportion of 1 to 4 the
a 99 cm long spring k 900 nm is compressed by 24 cm what is the potential energy due to the spring in
a cart with mass 310 g moving on a frictionless linear air track at an initial speed of 14 ms undergoes an elastic
calculate the molarity of a solution prepared by diluting 3688 ml of 0284 m potassium chloride to 1500
a conductor in the shapr of a sperical shell of radii 8 and 11 cm is charged to 20 uca find the electric field at the