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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
a woman stands on a scale in a moving elevator her massis 600 kg and the combined mass of the elevator and scale is
a body moving at 500c with respect to an observer disintigratesinto two fragments that move in opposite directions
the reaction between nitric oxide no and oxygen to form nitrogen dioxide no2 is a key step in photochemical smog
a factory workeraccidentally releases a 175 kg cratethat was being held at rest at the top of a 3 m long ramp inclined
calculate the number of moles of ethanol c2h6o in 2500 ml sample ethanol has a density of 076
a 70kh man jumping from a window lands in an elevated firerescue net 110 m below the window he momentarily stops when
in a nuclear power plant the reactor produces 361 c steam that is used to power the steam turbines which generate 2202
a weight of mass m1 is on africtionless ramp which makes angle theta with respect to thehorizontal this mass starts at
a 144 kg monkey wrench is pivoted at oneend and allowed to swing as a physical pendulum the period of itsmotion is 0860