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the ph of a 0010 mol l-1 solution of a weak monoprotic acid is 209 at 25oc what is the pka for this
draw fischer projections for the two d-aldoheptoses whose stereochemistry at c3 c4 c5 and c6 is the same as that of
1in the formation of the glyptal resin when the reaction appears to boil what substance is actually boiling off 2what
a spring-loaded gun fires a 0080-kg puck along a tabletop the puck slides up a curved ramp and flies straight up into
a 495 kg boy jumps on a 495 kg pogo stick with spring constant 3650 nma find the angular frequencyb find the frequencyc
which of the following molecular geometries could lead to linear molecule after removal of one atom at-shaped bsee-saw
a gas is initially at a volume of 1l and is then expanded to a volume of 2l if the pressure remains constant then which
a block of wood mblock 58 kg rests on a horizontal surface for which the coefficient of kinetic friction is 06 a
a leaf of area 36cm2 and mass 48times104kg directly faces the sun on a clear day the leaf has an emissivity of 085 and
n23h2 yields 2nh3 at stp how many grams of nitrogen are needed to react with 14l of
a 1 liter flask is filled with h2 at p1atm and another 1l flask is filled with he at p1 atm both are at 300k which
a girl of mass 500 kg jumps off the bow of a 840-kg canoe that is initially at rest if her velocity is 290 ms to the
for the equilibrium ch3cooch3aq h2o ch3cooh ch3oh kc 300 298k if a solution initially contains 015 m acetic acid
a 1400kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2400kg suv traveling
a 30 cm x 30 cm parallel plate capacitor has a 20 mm spacing the electric field strength inside the capacitor is 14 x
a sample of he gas was found to effuse 63 times faster than an unknown gas what is the molecular weight of the unknown
draw a six-carbon alkyne that can exist as diastereomers the molecule should contain only carbon and hydrogen
draw a structure containing only carbon and hydrogen that is a chiral alkyne with six carbon atoms wedgedash bonds are
a 690-kg elevator starts from rest and moves upward for 350 s with constant acceleration until it reaches its cruising
using structural formulas and arrows to show electron movement write reaction mechanisms for the pyrolysis of the aryl
1 a 610 g lead bullet traveling at 310 ms is stopped by a large tree if half the kinetic energy of the bullet is
find the number of moles of gas in a 70l container assuming that the pressure of gas is 50mm hg and that the
a girl of mass 550 kg jumps off the bow of a 760-kg canoe that is initially at rest if her velocity is 330 ms to the
which reagent is capable under standard conditions of converting co2 aq into cos but does not convert fe2 aq into fes