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nitrogen is collected over water at 21 degrees celsius vapor pressure of water is equal to 25 kpa explain what is the
compute the freezing point and boiling point of an anti freeze solution that is 50 by mass of ethylene glycol
the dream of the materials chemist is to discover a material that would be superconducting above room temperature thus
the 450 kg mass is now dropped from a height of 150 m into a cup containing 125 g of water the water is initially at
compute in grams how much4-cyclohexene-cis-12-dicarboxylic anhydride can be produced from20g of 3-sulfolen as well as
a student heats a 28594 gram sample of mixture that contains an unknown amount of potassium chlorate kclo3 in a test
from an as a stock solution of 00169m six diluted solutions were made to these percentages- 04 1 2 4 6 and 10 explain
to measure the concentration of benzene in a gasoline sample the internal standard toluene is added to the sample while
a balloon contains 23 liters of nitrogen gas at a temperature of 77 k and a pressure of 101 kpa if the temperature of
a metal m forms an oxide with the formula msub2o 2atoms of m 1 atom oxygen for which the mass of the metal is 888 a
explain the density of a liquid is to be found by weighing a dry 100-mlvolumetric flask then filling it with the liquid
demonstrate that the linear combination a ib and a-ib are n other mitian if a and b are hermitian
a laser utilized to read cds emits red light of wavelength 700 nm explain how many photons does it emit each second if
compute the energy per photon as well as the energy per mole of photons of radiation of wavelength a 200 nm ultraviolet
the speed of a certain electron is 995 km s-1 if the uncertainty in its momentum is to be decrease to 00010 per cent
at 23 degrees celsius and 1 atm the density of a gaseous hydrocarbon is 181 g dot l inverse 1 the hydrocarbon isa ch4b
if 250ml of methane ch4 effuses through a small hole in 48 s the time necessary for the same volume of helium to pass
a 550 ml sample of oxygen gas is collected over water at a temperature of 210 degree celsius as well as a pressure of
explain carbon-14 which is present in all living tissue radioactively decays via a first-order process a one-gram
a mixture of 1374 g of h2 and 7031 g of br2 is heated in a 200-l vessel at 700 k these substances react as follows h2 g
while doing sn2 chemistry- synthesis of 1-bromobutane from butan-1-ol why would the crude product likely contain
the question is asking is ionic equation and net ionic equation diring force type and reaction for the
if 335 g of cuno32 are obtained from allowing 225 g of cu to react with excess hno3 explain what is the percent yield
name and depict the structures of six compounds that have the formulac6h7n a five or a six membered ring and are
name and depict five compounds that have the formulac7h7br a six or seven membered ring and are