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the heat of combustion of ethanol c2h5ohl is -1367 kjmol a batch of sauvignon blanc wine contains 106 ethanol by mass
a 300 n box is placed on a frictionless inclined plane that makes a 220deg angle with the horizontalif a rope were tied
a 004-kg baseball traveling in a horizontal direction with a speed of 16 ms hits a bat and is popped straight up with a
what is the smallest thickness of a soap film that would appear black if illuminated with 470 nm light assume there is
consider the decomposition of liquid benzene c6h6l to gaseous acetylene c2h2g c6h6l -gt 3 c2h2 g change in enthalpy
a projectile of mass 20 kg approaches a stationary target body at 50 ms the projectile is deflected through an angle of
a duffel bag of mass 15 kg slides down a 35o incline with an acceleration of 11 ms2 as showna calculate the normal
consider the following reaction 2 ch3ohg -gt 2 ch4g o2 change in enthalpy 2528 a is this reaction exothermic or
a proton moves at 10x107 ms perpendicularly to a uniform magnetic field it experiences an acceleration of 20x 1013 ms2
for each of the following salt solutions indicate whether the solution will be acidic basic or neutral then using data
a proton moves eastward in the plane of earths 5x10-5 t magnetic equator so that its distance from the ground is
predict whether each of the following reactions will be spontaneous at all temperatures nonspontaneous at all
in rutherfords famous scattering experiment alpha particles helium nuclei were fired at 20 x 107 ms over a large
indicate whether each process produces an increase or decrease of the entropy of the system boiling of ethanol
a 62-kg astronaut is in space far from any objects that would exert a significant gravitational force on him he would
two electrons in the same atom both have n 9 and 3 keep in mind that the electrons are indistinguishablea how many
what is the concentration of free cu2 in an aqueous solution prepared as 025m in cu2 and 150m nh3 cu2aq 4nh3 cunh342
an electron in the beam of a typical television picture tube is accelerated through a potential difference of 20000 v
calculate the molar solubility of amgoh2 in 025m naohaqksp 18x10-11 bbaso4 in 0010m na2so4ksp
the normal boiling point of 1-butanol is 1178 c 1-butanol l 1 atm 1-butanolg 1atm delta h4382 kj calculate the boiling
a mass m1 170 kg and a mass m2 105 kg are suspended by a pulley that has a radius of 98 cm and a mass of 31 kg see
at 765 k kp460 for the reaction h2g i2g 2hig awhat is delta g for a mixture at equilibrium at 765k bwhat is delta g
mixtures of helium and oxygen can be used in scuba diving tanks to help prevent the bends for a particular dive 46l he
a sample of n2 gas occupies 240 l at 20degc if the gas is in a container that can contract or expand at constant