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one mole of an ideal gas expands reversibly and adiabatically from an initial temperature of 350 degrees c and a volume
an isolated container holding 30 g of hydrogen gas is at 25degrees c if 1000 calories were transferred to the gas what
given that the enthalpy of vaporization for water at its normal boiling point is 4069 kjmol calculate q w and delta u
describe 4 experimental factor that can influence the retention time of analytes in glc discuss how changing each
gamma rays gamma rays are high-energy photons in acertain nuclear reaction a gamma ray of energy 511 mev
a compound contains only c h n and o a 1279g sample was burned to give 160 co2 and 77g h2o a separately weighed 1625g
a an ideal gas occupies a volumeof 20 cm3 at 20degc andatmospheric pressure determine the number of molecules of gas
the activation energy for a reaction is 376 kj mol the rate constant for the reaction is 54 x 103 at 45 degrees celcius
an object is 12cm to the left of a lens with f20cm a secondlens with f4cms is 2cms to the right of the first lens find
a a microscpe objective with a 5 mm focal length is used toproject the image of an illuminated object 01mm high onto a
a board lies on top of two uniform cylinders with i mr22 which lie on a fixed plane inclined at angletheta the board
a 170 kgbucket of water is suspended by a rope wrapped around a windlassthat is a solid cylinder 0500 m indiameter with
when butyl bromide is treated with sodium iodide in ethanol the concentration of iodide quickly decreases but then
traumatic acid has a distribution coefficient of 58 between mtbe and water if 75 mg of traumatic acid is added to a
if a boat floats in two types of liquid one more desnse than theother where is the buoyant force greater on the
the ph of lemonade is approximately 30 how many times greater is the h in coffee than in tap water having a ph of
a 500kg pig is standing at the top of a muddy hill on a rainy day the hill is 1000m long with a vertical drop of 300 m
the energy necessary to generate a dislocation is proportional to the square of the length of the burgers vectoribi2
kathy is changing the tire of her car on a steep hill 200 m highshe trips and drops the 100-kg spare tire which rolls
write oxidation number of the following a ammonium oxalate nh42c2o4 and b ethanol c2h5oh please include
blackie a cat whose mass is 545 kg is napping on top of therefrigerator when he rolls over and falls blackie has a ke
the suns mass is 2 x 1030 kg and theaverage radius of jupiters orbit is 78 x 1011 m find the orbital velocity of
a mixture of cuso4 5h2o mgso4 7h2o is heated until all the water is lost if 5020 g of the mixture gives 2988 of the
an earth satellite revolves in a circular orbit at a height of525 km above the earths surfacea what is the speed of the
draw the structures and write the iupac names of the two alkenes that are formed when 2-hexanol undergoes a