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eggshells contain calcium carbonate caco3 what test would determine the presence of carbonate in these substances and
a baseball approaches home plate at a speed of 460 ms moving horizontally just before being hit by a bat the batter
a marble radius 06 cm and mass 40 g rolls without slipping down a ramp of vertical height 10 cm what is the speed of
280 ml of an hcl solution with ph of 310 is added to 200 ml of an hno3 solution the resulting ph is 14 what was the ph
a cylinder of mass 66 kg and radius 010 m rolls along a level floor its center of mass has a speed of 08 ms find the
consider the reaction between a magnesium atom and a sulfur atom to form magnesium sulfide would you expect this
late one night on a highway a car speeds by you and fades into the distance under these conditions the pupils of your
the freezing point of a solution of 010 g of an unknown compound in 5640 g of camphor kf 377 degrees cm is 21 degrees
a uniform cylinder of radius 118 cm and mass 281 kg is mounted so as to rotate freely about a horizontal axis that is
a piano string is so badly out of tune that the tension must be increased by 10 find the percentage increase of the
lysozyme is an enzyme that cleaves bacterial cell walls a sample of the enzyme has a molar mass of approximately 14000
one of the strings on a violin has a tension of 70 n and a linear mass density of 6 gs find the speed of transverse
two disks are mounted on frictionless bearings on the same axle and can be brought together so that they couple and
a solution of 100 g of anhydrous aluminum chloride in 500g of water freezes at -111c does the molar mass from the
a mixture of nacl and sucrose of combined mass 102g is dissolved in enough water to make 250 ml of solution the osmotic
a solid marble a solid disk and a hoop have the same mass m 09 kg and the same radius each object is held at rest at
if the freezing point of a 0106 m acetic acid solution is -0203 c calculate the percent dissociation of the
water flows trough a normal garden hose at 2 ms if a nozzle at the end of the hose reduces the cross sectional area to
typical roller coasters only have one motor to pull the cars up to the top of the first and highest hill from this
at 298k the osmotic pressure of a glucose solution is 1050 atm calculate the freezing point of the solution if the
two astronauts on opposite ends of a space ship are comparing lunches one has an apple the other has an orange they
a man stands on a frictionless platform that is rotating with an angular speed of 23 rads his arms are outstretched and
the solubility of pure nitrogen in water at 1 atm and 25 degress celsius is 68e-4 m calculate the concentration of
what is the enthalpy of formation of cog in kj 2cog o2g --gt 2co2g h reaction -566 kj h co2g -3935