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calculate the heat in joules when 8919 g of ice at 1000 k is turned into liquid water at 100 degrees celsius ive tried
the temperature of a silver bar rises by 100degc when it absorbs 123 kj of energy by heat is 525 grams determine the
the titration of a 250ml sample of 0100 m acetic acid using 0100 m naoh as the titrant the value of the equilibrium
the first step in industrial nitric acid production is the catalyzed oxidation of ammonia without a catalyst a
the four tires of an automobile are inflated to a gauge pressure of 17 105 pa each tire has an area of 0021 m2 in
a parallel-plate capacitor has fixed charges q and -q the seperation of the plates is then doubled by what factor does
at a particular temperature the equilibrium constant for the reaction h2g f2g 2hfg is k 640 a reaction mixture in a
a football is kicked at ground level with a speed of 400 ms at an angle of 350deg to the horizontal how much later does
classify na2c2h3o and cuno32 as weak strong or non-electrolyte in aqueous solution please
on a frozen pond a 7 kg sled is given a kick that imparts to it an initial speed of v0 23 ms the coefficient of
a crate of mass 125 kg is pulled up a rough incline with an initial speed of 150 ms the pulling force is 100 n parallel
express the concentration of a 00790 m aqueous solution of fluoride f- in mass percentage and in parts per million
which condition characterizes the stoichiometric point of any acidbase titration a equivalent molar amounts of acid and
a mechanic pushes a 28 multiplied by 103 kg car from rest to a speed of v doing 5400 j of work in the process during
what is the mole fraction of solute and the molal concentration for an aqueous solution that is 160 naoh by
a flight attendant pulls her 70 n flight bag a distance of 378 m along a level airport floor at a constant velocity the
a solution is made by mixing equal masses of methanol ch4o and ethanol c2h6o determine the mole fraction of each
a solution of h2so4aq with a molal concentration of 358 m has a density of 1200 gml what is the molar concentration of
initially a 200-kg mass is whirling at the end of a string in a circular path of radius 0750 m on a horizontal
an 765 kg fullback moving east with a speed of 57 ms is tackled by a 890 kg opponent running west at 274 ms and the
calculate the conditional formation constant kf for the formation of an edta complex with copper ii at a ph of 500 if
1 naim suleimanoglu of turkey has a mass of 62 kg 136 lbs yet he can lift 3 times his mass this feat has earned him the
a 195 g sample of potassium bicarbonate is decomposed by heating if the resulting potassium carbonate weighs 154 g and
1 how much gravitational potential energy did king kong have at the top of the empire state building king kong had a
1 how much kinetic energy did 939-kg usain bolt have when he broke the olympic 100-m dash record with a speed of 1025