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a compound decomposes by first order process if 25 of the compound decomposes in 60 minutes the half life of the
gas in a cylinder moves a piston with area 0200 m2 as energy is slowly added to the system if 200x103 j of work is done
concentrated hcl has a density of 119 gml and is 380 by mass hcl the rest of the mass is water how many ml of this
dry ice is frozen carbon dioxide suppose you have a piece of dry ice with a mass of 200 grams a little less than half a
you are titrating a 500ml solution of calcium hydroxide with phosphoric acid if it takes 1500ml of 00360 m phosphoric
a neutron decays into a proton and an electron the neutron was initially at rest after the decay the electron is found
you are given 1m mgso4-7h2o solution and 05m edta solution calculate how to make a 100ml solution containing 50mm mgso4
a 129-kg sculpture hangs from a horizontal rod that serves as a pivot about which the sculpture can oscillate the
the activation energy of a certain reaction is 325 kjmol at 20 c the rate constant is 00130s-1 at what temperature
the human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside
you are given a stock concentration of alcohol dehydrogenase adh the molecular weight of adh is 35000 gmol what is the
a hydrogen atom initially at rest emits an ultraviolet photon with a wavelength of lambda 122nm what is the recoil
you are given a 1 m mgso4-7 h2o solution and a 05 m edta solution calculate how to make a 100 ml solution containing 50
what would be the circumference in inches of a 250 pound solid steel cannon ball if the density of steel is 77 x 103
a ball and a thin plate are made from different materials and have the same initial temperature the ball does not fit
you dilute 100 ml of a 075 m cocl2 solution with water to a final volume of 350 ml what is the molarity of your diluted
the surface temperature of star y is 8100 k and the power output of the star is 530e27 w if the temperature increases
ammonium bicarbonate is used for our column chromatography it has a formula weight of 7906 gmol how much would you use
what is the density of a block which mass is 500 g and is only submerged 40 in bromoform which has a density of 2890
cobalt chloride hexahydrate has a formula weight of 2379 gmol how much would you use to make 05 liter of a 03 m
if 230 grams of rust were allowed to react with aluminum metal aluminum oxide would be formed what mass of aluminum
with an internal pressure of 5245e6 a two mole sample of ideal gas at 200degc in a container of volume 15l is increased
by holding a magnifying glass 24 cm from your desk lamp you can focus an image of the lamps bulb on a wall 16m from the
an engineer wants to find the rotational inertia of an odd-shaped object of mass 90 kg about an axis through its center
a 090-kg block is suspended from a spring with a spring constant of 6400 nm a 0030-kg bullet is fired into the block