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a mixture of sodium carbonate and sodium hydrogen carbonate is treated with aqueous hydrochloric acid the unbalanced
addition of 515 ml of 2238 m of h2so4 solution density11243 gml to 515 ml of 2238 m bacl2 gives a white precipitatewhat
calculate the energy needed to accelerate a spaceship of mass10000 kg to a speed of 3c for intergalactic
calculate the osmostic pressure of a 00120 m solution of nacl in water at 0 degrees celsius remember that nacl is an
the temperature of a plastic cube is monitored while the cube is pushed26 m across a floor at constant speedby a
starting from rest a 53 kg blockslides 21 m down a rough 300degincline the coefficent of kinetic friction between the
the uncertainty standard deviation in a single buret reading for a 50 ml buret is about - 002 ml two readings initial
suppose 400 g of hydrogen is separatedinto electrons and protons suppose also the protons are placed atthe earths north
the oxygen generated from the decomposition of the potassium chlorate converted some of the iron to ironiii oxide if
a 0470 kg pendulum bob passes through the lowest part of itspath at a speed of 380 msa what is the tension in the
some planetary scientists have suggested that the planet mars has an electric somewhat similar to that of the earth
use the following data to calculate the enthalpy of solution deltah soln for sodium hydroxide naohdeltahlattice -4259
if 1000 grams of sugar glucose mw1800 gmol is added to 3000 grams of water and the sugar dissolved what will be mole
three uniform spheres are located at the corners of anequilateral triangle each side of the triangle has a length of
the average depthnbsp of oceans is about 4km the oceans cover abou 70 of earths suface make an order of nagnitude
what is the molar concentration of a solution containing 456 grams of nacl added to 200 liters of water at 20 degrees
a pump is required to lift 800 kg of water about 210 gallonsper minute from a well 140m deep and eject it with a speed
500 ml of acetone denisty 25 degrees celsius0790 gml mw580 gmol is mixed with 1500 ml of water density 25 degrees
suppose you have four different atomshow many different ways do you think those four atoms can be
a tire 20 ft in diameter is placed on a balancing machinewhere it is spun so that its tread is moving at a constant
an 18-year-old runner can complete a 100-km course with an average speed of 449 ms a 50-year-old runner can cover the
what is the melting point of a 20 by weight aqueous solution of a sugar whose molecular weight is 180 gmol the kb for
a sprinterexplodes out of the starting block with an acceleration of214 ms2 which she sustains for 126 sthen her
a pendulum consists of a 20 kg stone swinging on a 40 mstring of negligible mass the stone has a speed of 80 ms when
finely divided sulfur ignites spontaneously in fluorine gas to produce sulfur hexafluoride as in the following