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the decomposition of a compound a to form b c is known to be a first order reaction if the half-life of the reaction
a square coil length of side 24 cm of wire is placed in a uniform magnetic field that makes an angle of 30 degree
a uniform beam of length l and of weight 90000 n is attached to a vertical wall by a hinge the beam is held in a
consider four different samples aqueous molten aqueous and molten current run through each sample produces one of
complete and balance the following skeleton reaction and identify the oxidizing and reducing agentshint the ph of the
state whether or not each of the following equilibrium reactions could have the equilibrium expressiona c g lt-----gt
an electric grinding wheel of radius 050 m is initially at rest when the motor is turned on at time t10s it then
the heat of vaporization delta hvap of carbon tetrachloride ccl4 at 25c is 394 kjmol if 1 mol of liquid carbon
an ideal gas is confined to a cylinder by a piston the piston is slowly pushed so that the gas temperature remains at
give an example of a process that is spontaneous at low temperature but non spontaneous at high
two conductors having net charges of 14 microc and 14 microc have a potential dierence of 111 v determine the
predict the reactivity state at room temperature and relative sizes of the following elements make a chart organize
light from the bottom of a swimming pool is incident on the surface at an angle of 20deg what is the angle of
a 70kg parachutist whose density is 1050 kgm3 is in free fall find the buoyant force due to the air and compare with
a sample of carbonic acid 0125 l 0165 m pka1 635 pka2 1033 was titrated with 153 m naoh calculate the ph at the
you are standing on a sheet of ice that covers the football stadium parking lot in buffalo there is negligible friction
what is the ph of a 0125 m solution of the weak base b if delta h -280 kj and delta s -175 jk for the following
a bullet moving at 200 ms strikes a wooden block which has several hundred times the bullets mass the block is hanging
a what is the angle between a wire carrying 830 a and the 120 t field it is in if 500 cm of the wire experiences a
the heat of vaporization deltahvap of carbon tetrachloride ccl4 at 25 degrees c is 394 kjmol if 1 mol of liquid carbon
a wire carrying a 320 a current passes between the poles of a strong magnet perpendicular to its field and experiences
a solution contains 25g of nacl per 1000 g of water at 25 degrees celsuis is the solution unsaturated saturated or
the decomposition of an aldehyde solution in carbon tetrachloride is a first order reaction with a rate constant of 120
a ray of one color for which n151 and a ray of another color for which n16 travel through a piece of glass they meet
the mass of a regulation tennis ball is 520g although it can vary slightly and tests have shown that the ball is in