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a water pipe decreases in diameter from 16 cm to 8 cm in the wider section the average velocity is 300cmsa what is the
the molar mass of cellulose is approximately 60 x 105 gmol and the molar mass of a soluble starch is on the order of 40
approx 8 of body weight lies above the 5th cervical vertebral body if an individuals mass is 66kg and if the cross
suppose that the force exerted by the heart on the blood entering the aorta is 325n and the surface area of the aorta
compound a was found to be optically active on catalytic reduction over a palladium catalyst 2 equivalents of hydrogen
two identical twins are falling toward the ground the twin in the green jumpsuit is going down head first and the twin
a new space shuttle takes d days to travel from the earth to the moon once it leaves earths orbit estimate the
what is the solubility of caf2 in a solution that has a equilibrium concentration of 01m edta ksp caf2 39 x 10-11
suppose helium nuclei has exactly the same mass as adding two single protons and neutrons the suns luminosity would bea
the low range of frequencies used for medical applications is about 1000000 hz what is the wavelength of this frequency
neon lamp spectrum shows many more distinct lines than that of hydrogen lamp the reason is thata neon lamp is brighterb
three helium nuclei fuse together forming one carbon nucleus the mass of carbon is less than three times the mass of
sound from the siren of an emergency vehicle has a frequency of 7500 hz and moves with a velocity of 3430 ms what is
a warning buoy is observed to raise every 50 s as crests of waves pass by ita what is the period of these wavesb what
a submarine sends a sonar signal which returns from another ship 2250 s later how far away is the other ship if the
what is a by-product that could form from the condensationelimination of 13-diphenylacetone in a reaction with benzil
police investigators examining the scene of an accident involving two cars which nearly came to a stop before colliding
calculate the oh concentration of a solution of na2cro4 0225m the sodium salt of chromic acid chromic acid is h2cro4 a
a person stands on a bathroom scale in a motionless elevator when the elevator begins to move the scale briefly reads
a ball is thrown horizontally from the roof of a building 450m tall and lands240m from the base what was the balls
calculate the concentration of cro42- in a solution that is 00375m in chromic acid and 0150m hcl chromic acid is h2cro4
the summit of a mountain 2450m above base camp is measured on a map to be 4580m horizontally from the camp in a
when an aqueous solution that is 1m each in hcl zncl2 and cobr2 is electrolyzed the elemental products formed initially
you see condensed steam expelled from a ships whistle 250 s before you hear the sound if the air temperature is 200
based on their reduction potentials what are the most likely cathode products in the electrolysis of an aqueous