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derive an expression for the time dependence of the degree of polymerization for a stepwise polymerization in which the
calculate the ph of 100 l of the buffer 100 m ch3coona100 m ch3cooh before and after the addition of a 0080 mol naoh b
in each case indicate whether the addition of an electron to the ion would increase or decrease the bond order of the
the maximum strain of a steel wire with youngs modulus 20 x 1011 nm2 just before breaking is 020 what is the stress at
one of the important reactions in living cells from which the organism draws energy is the reaction of adenosine
a 24-kg boy stands 6 m from the center of a frictionless playground merry-go-round which has a moment of inertia of 240
a block of mass m 3 kg is attached to a spring k 27 nm by a rope that hangs over a pulley of mass m 7 kg and radius
a coin is located 296 cm to the left of a converging lens f 216 cm a second identical lens is placed to the right of
an ice hockey puck is sliding along the vertical wall as shown on the picture top view shown puck is moving in the
what is the electric potential at a distance of 2m from a point charge of 80 ucif an electron e-1610-19c is placed at
a space station is to provide artificial gravity to support long-term stay of astronauts and cosmonauts it is designed
the turbine and associated rotating parts of a jet engine have a total moment of inertia of 30 kg m2 the turbine is
a 02678g sample of an unknown acid requires 2721ml of 01164 m naoh for neutralization to a phenolphthalein endpoint
if you tied the string from the previous problem to a wooden block and used the wooden block to keep the lead block
if you had a ph of 70 in the body how much ammonia from the kidney would you need to add to get to a ph of 738 assume
in order to generate an induced voltage a coil of cross sectional area 2x10-4 m2 is placed in a 4t magnetic field and
a 30 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive
what are the major species present in the aqueous solutions of each of the
use the map to determine which of the statements below are true select the three statements that are true
air enclosed in a cylinder has density p 14kgm3what will be the density of the air if the length of the cylinder is
write the balanced redox reaction for the formation of copper i oxide from molecular oxygen and solid coppera balanced
suppose a capacitor in a video camera has a capacitance of 260 f and is currently holding 5000e-5 c of charge how much
when a 90 v battery is connected to a capacitor it puts 840e-4 c of charge on the capacitor when a different battery
a wood sample is obtained from a tree that originally grew in 1804 ad if the initial rate of decay in 1804 ad can be
3-nitrophthalhydrazide and luminol that are consistent with reduction of the nitro function to an amino group in