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liquid nitrogen trichloride is heated in a 250-l closed reaction vessel until it decomposes completely to gaseous
calcium crystallizes as a face-centered unit cell calcium has an atomic radius of 197 pm and the density is 155 gcm3
the scale of a spring balance reading from zero to 200 n is125 cm long a fish hanging from the bottom of the
platinum crystallizes into a cubic lattice structure that has a total of four pt atoms per unit cella what type of unit
a boy scout starts a fire by using a lensfrom his eyeglasses to focus sunlight on kindling 56 cm from the lens the boy
we allow 320g of methane ch4 to react as completely as possible with excess oxygen o2 to form co2 and water what mass
a pendulum has a length l 130m it hangs straight down in a jet plane about to take off as shown by the dotted line in
a gas mixture contains 100 mol of co and 125 mol of o2a compute the mole fraction of co in the mixtureb the mixture is
a proton and an electron are moving due east in a constant electricfield that also points due east the electric field
a positively charged particle of mass 72x10-8 kg istraveling due east with a speed of 85 ms and enters a 031-tuniform
how many milliliters of a 150 by mass solution kohaq d114gml are required to produce 260l of a solution with
two balls with masses of 20 kg and 60 kg travel toward each other at speeds of 12 ms and 40 ms respectively if the
a a solution that is 65x10-2 m in potassium propionate c2h5cook or kc3h5o2 and 90x10-2 m in propionic acid c2h5cooh or
what are the three common functional groups in organic chemistry that are readily ionized by adjusting the ph of the
two rods one of aluminum and the other of copper are joinedend to end the cross-sectional area of each is 40 x
two identical small insulating balls are suspended byseparate 025-m threads that are attached to a common point on
how many moles of oxygen can be obtained by the decomposition of 100 mol of reactant in the reaction 2kclo3 --gt 2kcl
an electron q -16e-19 c m 91e-31 kg has an initialvelocity t0 of v 16e5 ms j 24e5 ms k and is moving in a
a 1000 gram sample of an alcohol was burned in oxygen to poduce 1913g of co2 and 1174g of h2o the alcohol contained
if a student used 1245ml of their naoh solution to neutralize 1000ml of a 0543m khp solution then what is the
a home run is hit in such a way that the baseball just clearsa wall 21 m high located 130 m from home plate the ball is
suppose white light falls on two slits separated by a shortdistance one slit is covered by a red filter 700 nm andthe
a 10-turn circular couil of radius 20mm carries a current of050 a find the magnetic field magnitude at its
describe the glassware and the technique you would use to take part of a sample of a solution of concentration 100 and
two identical conducting spheres each having a radius of 07 cm are connected by a light conducting wire of length 09 m