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define when 144g of carbon were burned in the presence of 551g of oxygen 167g of oxygen remained un-reacted explain
an aquarium is filled with a liquid a cork cube 100 centimeter on aside is pushed and held at rest totally submerged in
state the balanced net ionic equation for the reaction between mno4- ion as well as fe2 ion in acid solution explain
a 781g sample of hcn contains 0289g of h as well as 405g of n determine the mass of carbon in a sample of hcn with a
the sled dog drags sleds a and b across the snow the coefficient of friction between the sleds and the snow is 007 if
a proton of mass m is moving with initial speed v0 directly toward the center of an alpha atom of mass 4m which is
the boiling point of methanol is 722o c the molar boiling point elevation constant for methanol is 27o cm explain what
fluorine-18 decays by positron emission as well as is a key tracer used for medical imaging via positron emission
determine the speed at which superman mass790 kilogram must fly into a train mass 19186 kilogram traveling at 850
explain how many milliliters of water vapor measured at 318 degrees c and 735torr are formed when 336ml of nh3 at
a shear force of 310 newton is applied to the upper surface of a cube made with copper that has a dimension of 32
consider the possibility of a new design for an electric train the engine is driven by the force on a conducting axle
a stone is swinging in a horizontal circle 09 meter in diameter at the angular speed of 32 revm the sun causes the
a merry-go-round in the park can be considered a circular disk of mass 100 kilogram and a radius of 20 meter a person
water flows straight down from an open faucet the cross-sectional area of the faucet is 22 times10-4 m2 and the speed
explain while the gibbs free energy g is the fundamental function of natural variables t p n growing biological cells
a hot-air balloon is accelerating upward under the influence of two forces its weight and the buoyant force for
on an average is an electron farther away from the nucleus when it is occupying a 2p orbital in hydrogen than when it
a rotating wheel requires 5 second to complete 50 revolutions its angular speed at the end of the 5 second interval is
formic acid is a weak acid with a ka value of 18x10-4 at 25 celsius a solution with a concentration of 424m formic acid
a man stands in a stationary canoe and throws a 473 kilogram stone with a velocity of 710 ms at an angle of 363 degree
a 40-cuft tank is filled with air at 147psia and 80 f the tank also contains a 15-lb block of dry ice solid co2
a soccer ball which has a circumference of 700 centimeter rolls 140 yards in 335 second obtain the average angular
the entropy of hydration becomes additional negative from na to mg2 to al3 though the coordination number is probably 6
an electric motor rotating a workshop grinding wheel at a rate of 100revmin is switched off suppose the wheel has a