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a sodium hydroxide solution was standardized by titrating 2650 ml of 01250 m standard hydrochloric acid the initial
a mass m is connected to the bottom of a vertical springwhose force constant is k attached to the bottom of themass is
if 3350 ml of a standard 01450 m naoh solution is required to neutralize 1700 ml of h2so4 what is the molarity of the
a bungee jumper falls for 13 s before the bungee cord beginsto stretch until the jumper has bounced back up to this
what is the ksp for cholesterol in the human body blood serum also what is cholesterols solubility in the blood
a 755 n diver drops fromw a board 100 m aabove watersserface find the divers speed 500m above the waters serfface then
a student wished to prepare ethylene gas by the dehydration of ethanol at 140 c using sulfuric acid as the dehydrating
two capacitorsc1 30 microf andc2 30 microfare connected in parallel and charged with a 100 v power supplya calculate
a series combination of a 11 k resistor and an unknown capacitor is connected toa 11 v battery one secondafter the
when 2-methylpropene is bubbled into dilute sulfuric acid at room temperature it appears to dissolve what new substance
a 108 g piece ofstyrofoam carries a net charge of -0700 microc and floats abovethe center of a large horizontal sheet
find the pressure increase in the fliuid in a syringe when anurse applies a force of 42n to the syringes circular
an electric dipole consists of charges 2e and-2e separated by 060 nm it is in an electric fieldof strength 45 x 106 nc
beams of high-speed protons can be produced in guns usingelectric fields to accelerate theprotons a what acceleration
-a student started the purification and recrystallization with a crude sample of adipic acid that weighed 20421 g and
a rock is dropped off the side of a bridge and hits the waterbelow 2s latera what was the rocks velocity when it hit
estimate the volume of water in the worlds oceans in cu km assuming a mean depth of water of 4 km how deep would the
to what volume should you dilute 595ml of a 495m ki solution so that 260ml of the diluted solution contains 345g of
a 12v battery is conected to an electricstarter motor the current through the motor is 223ahow much energy does the
you made a ph 10 buffer by combining 142 ml of 28 nh4oh with 175 g nh4cl what would have been the ph of the buffer if
an alpha particle helium nucleus charge 2e starts fromrest and travels a distance of 30 cmunder the influence of a
naoh solution- you will prepare naoh solution by diluting 3ml of 50 by mass naoh p153 gml to 500 ml note 50 by mass
consider the following reaction a reaction mixture initially containing 0490 and 0490 was found to contain 11times10-3
a 0066 mol sample of formaldehyde vapor ch2o was placed in a heated 500 ml vessel and some of it decomposed the
the coefficient of static friction between the tires of amotorcycle and the road is 056 at a speed of 19 ms what is