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a spherical balloon has a radius of 675m and is filled with helium the density of helium is 0179 kgm3 and the density
using information from the table of standard thermodynamic data in the textbook calculate the equilibrium constant keq
standard addition to measure ca in breakfast cereal 0521 6 g of crushed cheerios was ashed in a crucible at in air for
a submarine dives to a depth of 190 feet in the ocean what is the force in pounds acting on a hatch that has a area of
a scuba diver and her gear displace a volume of 697l and have a total mass of 729kg what is the buoyant force on the
a bungee cord is stretched between two poles with a force of 383 n the length of the cord is 28 meters and it has a
a softball player swings a bat accelerating it from rest to 26 revs in a time of 20s approximate the bat as a 90 kg
a 528 hz sound wave travels through a substance the wavelength of the sound wave is measured to be 32 meters what is
a 681 kg crate is lifted to the top of a building with an acceleration of 337 ms2find the force exerted by the cable on
a glass u-tube with a uniform diameter of 0850 cm is used to determine the density of an oil as shown in the figure
an airplane has an effective wing surface area of 15 m2 that is generating the lift force in level flight the air speed
a train slows from 40ms to 10ms in 3 seconds if its mass is 50000kg what was the change in momentum what was the
use the values from the table of reduction potentials on the last page to determine gordm and keq for the reaction as
a 500-kg elevator is pulled upward with a constant force of 5500 n for a distance of 500 ma what is the work done by
a basketball player jumps straight up and then lands 049 seconds after leaving the ground find the initial velocity of
you propose a new temperature scale with temperatures given in m you define 00 m to be the normal melting point of
when sufficient quantity of heat has been added to reach the boiling point of a solution what happens to any additional
in northern climates it is common to have a layer of frost form on cars that have been out overnight in the winter
the ph of an aqueous weak acid solution is 620 at 25 degree celsius calculate the ka for the acid the initial
write the formulas of the conjugate base of the following acids a hno2 b h2so4 c h2s d hcn e
a quantity of 675g of so2cl2 was placed in a 20l flask at the equilibrium there is 00345mole of so2 present calculate
the equilibrium constant for a reaction 2so2 o2 lt------gt 2so3 is 28 x 102 at a certain temperature if so2 2 00124m
arrange the following solutions in order of decreasing freezing point 010m na3po4 035m nacl 020m mgcl2 015m c6h12o6
calculate the percent ionization of 0085m lactic acid in a solution containing 0050m sodium
a tuning fork is set into vibration above a vertical open tube filled with water the figure the water level is allowed