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how many moles of boron tribromide bbr3 are present in a sample tht contains 602 moles of bromine
a bucket of mass 160 kg is whirled ina vertical circle of radius 140 m atthe lowest point of its motion the tension in
a pure gold ring and pure silver ring have a total mass of 163 g the two rings are heated to 661 c and dropped into a
a 040kg soccer ball approaches a player horizontally with avelocity of 20ms to the north theplayer strikes the ball and
a 17kg object is at rest a3n force to the right acts on theobject during a time interval of 15sa what is the velocity
what is the freezing point of a solution that contains 100 g of glucose c6h12o6 in 100 g of h2o kf for water is
a bottle has a mass of 3500 g whenempty and 9849 g when filled withwater when filled with another fluid the mass is
a hydraulic lift is used to jack a 1070 kg car 13 cm offthe floor the diameter of the output piston is 18 cm and
an 0775 kg football is thrown witha speed of 146 ms a stationary receivercatches the ball and brings it to rest
calculate the theoretical amount of nh4no3 that would be required to change the temperature of 50 ml of water from room
seawater contains about 885ppm s assuming that this is in the form of so42- what weight of baso4 precipitate would be
a 10 kg test rocket is fired vertically its fuel propels it to a heaight of 100 m at which point the engine shuts off
octane is a liquid component of gasoline given the following vapor pressures of octane at various temperaturesestimate
a satellite orbits neptune 4000 km above its surface given that the mass of neptune is 102 x 1026 kg and the radius of
can you please explain valence electrons and how i go about determining the valence electron for different
a child sitting 118 m from the centerof a merry-go-round moves with a speed of 120 msa calculate the centripetal
how many milliliters of a stock solution of 560 m hno3 would you have to use to prepare 0160 l of 0510 m hno3 if you
a 288 g lead weight initially at 106 c is submerged in 768 g of water at 520 c in an insulated container what is the
for womens volleyballthe top of the net is 224m above the floor and the court measures90m on each side of the net using
a ball is thrown straight up takes 225s to reach a hieght of368ma what was its initial speedb what is its speed at this
for which kc 130102 note kc not kp 406 mol of ch3n2ch3g are placed in a cylinder that is equipped with a movable piston
a stone is dropped into the water from a bridge 144ft above thewater another astone is thrown vertically down 1s after
two railroad cars each of mass 6400 kgare traveling 94 kmh toward each otherthey collide head-on and come to rest how
a car travels up a hill at constant speed of 40kmh and returnsdownhill at the speed of 60kmh calculate the average
for h35cl the internuclear distance is 01275 nm calculate the moment of inertia i and calculate the energies of the