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consider the titration of 800 ml of 0100 m baoh2 by 0400 m hcl calculate the ph of the resulting solution after the
a penny has a mass of 25 and is 15 thick a nickel has a mass of 57 and is 19 thickif you make a stack of coins on a
a buffered solution is made by adding 500 g nh4cl to 100 l of a 075 m solution of nh3 calculate the ph of the final
the crew of a rocket that is moving away from the earth launches an escape pod which they measure to be 55 m long the
how much heat is liberated when 5kg of coal is burned if the coal is 962 carbon by mass and the other materials in the
suppose one gallon of gasoline produces 11 108 j of energy and this energy is sufficient to operate a car for 43 miles
balance the following redox reaction if it occurs in acidic solution what are the coefficients in front of h2c2o4 and
a spacecraft has a nonrelativistic or classical momentum whose magnitude is 70 1012 kg middot ms the spacecraft moves
what is the equation for conversion 4-methylcyclohexene into a mixture of 4 isomers of c7h12 using sulfuric
starting from rest your friend dives from a high cliff into a deep lake below yelling in excitement at the thrill of
a gas absorbs 25 j of heat and then performs 131 j of work the change in internal energy of the gas
a horizontal force of 100 newtons is applied to a block having a mass of 10 kg the frictional force across the floor is
a large pot is placed on a stove and 12 kg of water at 14degc is added to the pot the temperature of the water is
the isotope cesium 137 has a half life of 30 years cesium-137 is a produced in nuclear power plants we currently find
resistors of values 80 120 and 240 are connected in parallel across a fresh battery which resistor dissipates the
the specific heat of copper is 0092 calg oc show that the amount of heat needed to raise the temperature of a 10 gram
the ph of a household cleaning solution is 1164 this cleanser is an aqueous solution of ammonia with a density of 100
a sled and its rider are moving at a speed of 40 ms along a horizontal stretch of snow the snow exerts a kinetic
calculate the ph of a solution made up from 22 g of potassium hydroxide dissolved in 146 ml of 016 m perchloric acid
a buffer is made by dissolving 112 g of sodium dihydrogen phosphate nah2po4 and 177 g of disodium hydrogen phosphate
a 43-m long plank with a weight of 164 n is place on a dock with 14 m of its length extended over the water the plank
john and david are carrying bob on a uniform horizontal board 89 m long which weighs 211 n bob weighs 542 n and is
a buffer solution is prepared by mixing together equal quantities of formic acid hcho2 and sodium formate nacho2 write
1 the 1s--gt 2p transition in a hydrogen-like atom occurs at 100x106 cm-1a what is the ionization energy of this atom
a roller in a sheet-metal processing plant has a diameter of 177 m and a mass of 5871 kg assume the roller is a solid