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if cost per gram were not a concern which of the following substances would be the most efficient per unit mass for
when a tuning fork of frequency 360 hz is held above a tube filled with water the resonances are found when the water
to determine the specific heat of an object a student heats it to 100 degrees c in boiling water she then places the
a find the phb how many grams of koh must be added to 0500 l of the buffer to change the ph by 010
170 ml of an hcl solution with ph of 230 is added to 200 ml of an hno3 solution the resulting ph is 140 what was the ph
a string 19 m long with a mass of 26 g is stretched between two fixed points with a tension of 80 nfind the frequency
a piano tuner stretches a steel piano wire with a tension of 765 n the steel wire has a length of 0900 m and a mass of
what is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 l per minute at 573 k
a buffer is prepared by dissolving 52203g of hno2 and 65552g mgno22 into water forming 25 l of solution what is the ph
a pair of in-phase stereo speakers is placed side by side 080 m apart you stand directly in front of one of the
a satellite of the earth has a mass of100kg and is at an altitude of100multiplied by106ma what is the gravitational
1 a first-order reaction has rate constants of 45 10-2 s-1 and 90 10-2 s-1 at 0degc and 20degc respectively what is the
how much energy is required to move a600kg object from the earths surface to an altitude twice the earths
at the earths surface a projectile is launched straight up at a speed of105kms to what height will it rise ignore air
the explosive nitroglycerin decomposes rapidly upon ignition or sudden impact according to the following balanced
limonene mw 136 is a pleasant smelling liquid found in lemon and orange peels the bp of limonene is 175 but it
3 isomerse-12-diisopropylethenez-12-diisopropylethene11-diisopropylethenewhat is the order of stability of these three
the standard enthalpy of formation of gaseous water is -24182 kjmol at 298 k estimate this value at 370 k the molar
how many milliliters of 26 m nh4cl must be added to 260 ml of 020 m nh3 to obtain a buffer solution having
when you convert units how do you decide which part of the conversion factor is in the numerator and which is in the
how would you compare the molar enthalpies of neutralization for a monoprotic acid a diprotic acid and a triprotic acid
a 5kg ball moving to the right at 6ms strikes a 3kg initially at rest the 5kg ball continues moving in the same
a ball with 3gr mass and momentum p strikes elastically a wall and bounces off calculate the change in the balls
does fadh2 have a thermodynamic tendency to reduce coenzyme q at ph 7 explain
in a graphing calculator there are four aaa batteries which together provide a potential difference of 15 v and a total