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ethyl alcohol has about half the specific heat of water assume equal amounts of energy are transferred by heat into
the carbonyl peak of benzaldehyde appears as a very strong and intense peak at 1703 cm -1 normally the carbonyl peak of
what is the retention factor for the following tlc plate if the baseline is 1 cm elution solvent traveled 5 cm from the
a series rlc circuit has components with the following values l 220 mh c 940 nf r 300 and vmax 100 v with v vmax
a 522 mg portion of tri-protonated arginine is disolved in 9955ml of distilled deionized water then 45mls of 015n naoh
a proton that absorbs radio frequency radiation at higher field strength will appear in a 1h nmr spectruma at 0 ppmb
a step-down transformer is used for recharging the batteries of portable electronic devices the turns ratio n2n1 for a
a certain ore is 328 nickel by mass how many kilograms of this ore would you need to dig up to have 100g of
a series ac circuit contains a resistor an inductor of 210 mh a capacitor of 510 microf and a source with vmax 240 v
a stretched spring stores 22 of energy how much energy will be stored if the spring is stretched three times as
treatment of cyclohexanone in the presence of sodium borohydride results in a product that can be isolated and purified
two mirrors are at an angle of 45 degrees to each other a light beam strikes the bottom mirror which is horizontal at
part 1the volume of ice has been estimeted to be 285 x 106 km2 the density of ice is 918 kgm3 the radius of the earth
a solid disk of radius 630cm and mass 115kg which is rolling at a speed of 150ms begins rolling without slipping up a
when responding to sound the human eardrum vibrates about its equilibrium position suppose an eardrum is vibrating with
air undergoes a polytropic expansion process in a piston-cylinder assembly from 75 psia and 300 f to 15 psia employing
648g of nah2po4 and 2196 g of k2hpo4 are dissolved in sufficent water to make a liter of solution caluclate the ph of
a block of unknown mass is attached to a spring of spring constant 51 nm and undergoes simple harmonic motion with an
17g of 23-dimethyl-13-butadiene is refluxed with 17g of maleic anhydride in toluene and 1g of product is recrystallized
a narrow tube open at one end has varibale length when a vibrating tuning fork is held near one end the sound intensity
a bowling ball solid sphere mass727 and radius127cm is rolling on level ground at a constant angular speed of 55rads
water contained in a piston-cylidner assembly undergoes 2 processes in series from an initial state where the
the density of water is 100 gml and the density of propanol c3h8o is 0866 gml what volume of propanol contains the same
s and p waves simultaneously radiated from the hypocenter of an earthquake are received at a seismographic station 173