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a dramatic classroom demonstration involves cooling a balloon from room temperature 298 k to liquid nitrogen
the product from a reactor contains 60 ww a 25 ww b and 15 ww cnbsp the final saleable product is required to contain
a sample of xenon gas is maintained at 420 torr and 45oc occupies a volume of 420 ml determine the mass of the gas
the activity of a certain isotope dropped from 3200 ci to 800 ci in 120 yearswhat is the half-life of this isotope in
consider the reaction h2o2aq 3i-nbspaq 2hnbsp----------gt i3-nbspnbspaq 2h2o l1 over the first 50 seconds the i- fell
why do you think a distillation tower can separate oil into different fractions while we cant separate seawater into
for the reaction x y -----------gt z at 360 c the following data are obtainedconc x mconc y mrate of consumption of x
boron trifluoride gas is collected at-50degcin an evacuated flask with a measured volume of200l when all the gas has
the rate constant for a first order reaction occurring in pathogenic bacterial cell at 25nbspc nbspis 455 x 10-2nbsps
1 the sulfur dioxide present in air is responsible for the acid rain phenomenonnbsp one can calculate its concentration
calulate the vapor pressure of water over a solution made by dissolving 225g glucose in 275g of water at 35c give me
order ampicillin 150 mg iv q8h the directions on the package state reconstitution of the single-use vial with 48 ml
what mass of agcl will dissolve in 100 l of water containing 0088 moles of nacl nbspkspof agcl is17x 10-10nbsp report
order gentamicin sulfate garamycin 24 mg iv q8h the label on the vial reads 40 mgml how many ml will you
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when 754 j of energy is absorbed by 025 mol of ccl4 what is the temperature change of ccl4 the specific heat capacity
what is the largest concentration of s-2which is attainable before the onset of precipitation for mns in a 5602 x 10-3m
shown below is a students answer from last years exam depicting a block diagram of a flame atomic absorption
for an analytical chemistry lab a student was asked to use the standard addition method to determine the concentration
determine the ph of a solution that is 140 naoh by mass assume that the solution has density of 101
the half-life of a reaction t12 is the time it takes for the reactant concentration a to decrease by half for example
use the solubility rules in table 41 of your textbook to predict if the following reactions will form precipitates if
1 what happens when barium chloride is added to a sodium sulphate solution whats the equation2 what happens when
what is the theoretical yield of acetic acid when 225 g of methanol reacts with 320 g of carbon monoxide in the
how would you expect a sample of pentane to behave under similar experimental