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a rock is dropped off a bridge and hits the water below 3 s later the rock is going 30 ms before it hits the water what
a saturated solution of pbcl2 in water was prepared and filtered from the filtrate 10 l was measured out into a beaker
how many donor atoms enable edta to form a stable complex ion with lead a 4 b 6 c 5 d 3 e
a girl of mass 40 kg jumps with a horizontal velocity of 5 m s-1 onto a stationary cart with frictionless wheels the
1 two capacitors c1 and c2 with capacitors of 025 uf and 050 uf respectively are connected in parallel across on 80
which of these square planar complex ions can have cis-trans isomers a ptnh32cl2 b ptnh342 c ptnh3cl3- d ninh33cl e
which statement is correct about transition metals a they have incompletely filled d subshells b they form paramagnetic
a beaker contains 250 ml of an aqueous solution that has 025 moles of formic acid hcooh and 025 moles of sodium formate
how would the value of molecular weight be affected if all of the liquid is not vaporized
how would a calculated specific heat be affected if there is less water in the calorimeter that the value used in a
the vapor pressure of ethanol at 347 degrees celsius is 100mmgh and the heat of vaporization of ehanol is 386 kj mol
how would a calculated specific heat be affected if the metal cools before it is transferred to the water would it be
a 095 102 g mass of tungsten at 1000degc is placed in 210 102 g of water at 200degc the mixture reaches equilibrium at
how might you use 13c nmr spectroscopy to determine if the brominated product is contaminated with some unreacted
years ago a block of ice with a mass of about 190 kg was used daily in a home icebox the temperature of the ice was
in a tug of war each man o a 5-man team pulls with an average of 500n what is the tension in the center of the
draw fischer projection formulas for the products likely to be obtained from the bromination of z-2-pentene with
a 415 g sample of chloroform is condensed from a vapor at 616degc to a liquid at 616degc it liberates 9800 j of heat
which of the following is an accurate comparison of the properties of nitrogen and oxygen a nitrogen uses more
a massless spring is compressed between blocks of mass x and 5x on a smooth horizontal frictionless surface when the
flask a has a volume of 050 l and contains 50 g of a volatile liquid flask b has a volume of 135l and contains 348 g of
a square plate of copper with 550 cm sides has no net charge and is placed in a region of uniform electric field of 830
a charge of 190 microc is at the center of a cube of edge 750 cm no other charges are nearbya find the total flux
find a parametric representation for the plane that passes through the point 2 2 1 and contains the vectors i j k and
what is the lewis structure for nbr3 how many electron pairs in the central atom of nbr3 how many bonding electrons