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what is the heat of sublimation kcalmol of diatomic iodine at 29815 k the heat of formation of iodine gas is 6225
if i know the net force acting on an object and the acceleration that the object has from the force how do i find the
calculate the enthalpy of reaction delta h for this reaction in kjmol is this reaction exothermic or
a centrifuge in a medical laboratory rotates at an angularspeed of 3600 revmin when switched off it rotates through500
consider the diffusion of dopant element a into crystalline water the dopant rich coating is considered as a large
one terminal of a car battery is said to be connected to ground since it is not really connected to the ground what is
a person swims east to west across a river that is 30 meters widethe person swims westward compared to the water at
three identical flasks contain three different gases at standard temperature and pressure flask a contains ch4 flask b
the volume of 350 ml of gas at 25c is decreased to 125 ml at constant pressure what is the final temperature of the
a horizontal board weighing 2050 n is supported at points a and b in the figure below the plank servesas a platform for
within cells small organelles containing newly synthesized proteins are transported along microtubules by tiny
in order to study air quality a 4501 l sample of air was collected at the mcmurdo station near the south pole on an
an archer shoots arrows at a target some of the arrows stick in the target while others bounce off assuming that the
in a closed container consider treating 10 mols caco3s with 10 l of 050 m hcl after all reactions of consequence occur
an electron is released a short distance above the surface ofthe earth a second electron directly below it exerts
a 10kg box is acked on by forces f1 74 and f2 45 what additional horizonal force will keep the box at
a 050 mol sample of oxygen gas is confined a 0deg c in a cylinder the initial pressure in the cylinder is 10 atm if the
in an experiment designed to measure the speed of light alaser is aimed at a mirror that is 440 km due north a detector
as measured in earths frame of reference two planets are 424000 km apart a spaceship flies from one planet to the other
two balls of masses ma 40 g and mb 60g are suspended each on a string of 30 cm long side byside the lighter ball is
a small mirror is attached to a vertical wall and it hangs adistance of 156 m above the floor the mirror is facing due
if 2521 ml of naoh solution is required to react completely with 0550 g khp what is the molarity of the naoh
a 100-muf capacitor is fully charged by being connected across a 100-v battery it is then disconnected from the battery
what volume in ml of oxygen are required to react completely with 157 ml of c4h10 at the same pressure calculate your
a 222 kg steel ball strikes a massive wall at 104ms at an angle of alpha 584deg with theplane of the wall it bounces