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200 l of 0100m ph 900 glycine buffer starting with the sodium chloride salt of zwitterionic glycine and 100m naoh is
if a solution of kbr mm11901 gmol has a concentration of 25 m and a solution density of 105 gml what is the mass of
a 500-l reaction vessel contains 100 mol n2 300 mol h2 and 0500 mol nh3 will more ammonia nh3 be formed or will it
1 why does a soluble impurity reduce the melting-point range of a pure compound2 why is it advisable to run a mixed
calculate the maximum number of moles and grams of h2s that can form when 195 g aluminum sulfide reacts with 106 g
an unknown compound b has the melting point 1125-114 degrees c it is suspected that b is either x or a each compound
many metals react with oxygen gas to form the metal oxide for example calcium reacts in the following manner 2 cas o2g
assuming that the gas is ideal calculate the work required to compress ar gas from 10l to 1l the gas is initially at 25
an unknown compound a has a melting point 123 degreesc-124 degreesc it is thought that z is either breported 122
a carbohydrate is a compound composed solely of carbon hydrogen and oxygen when 77467 g of an unknown carbohydrate
a perfect gas undergoes an expansion process at constant pressure does its internal energy increase decrease or stay
the density of potassium which has the bbc structure and one atom per lattice point is 0855 gcm3 the atomic weight of
carbon dioxide is heated in a constant pressure process from 15c and 1013kpa to 86c determine per unit mass the changes
write the structure of the product formed by treating montelukast with one equivalent of sodium hydroxide write the
two methods were used to analyze the amount of au in gold ore a normal fire assay of 8 samples indicated of 156 where
calculate the volume in l of ethylene glycol in a radiator that contains 2170 g ethylene glycol the density of ethylene
when 422 g of phosphorus is burned 967 g of white oxide is obtained determine the empirical formula of the
a reaction was found to be second order in carbon monoxide concentration the rate of the reaction if the co is doubled
a sample of gasoline was run through the gc yielding several peaks indicating the components that made up the gasoline
for hydrogen gas at 500 k initially at 200 atm in a 100 l vessle and expanding into 200 liter vessel calculate the
230 moles of an ideal gas with molar heat capacity at constant volume of 1247 jkmol is expanded irreversibly and
gold has a face-centered cubic arrangement with a unit cell edge length of 408 how many moles of gold fit in a sheet
prolonged exposure to mercury hg vapor can cause neurological disorders and respiratory problems for safe air quality
a solution was analyzed using aa spectroscopy for au the signal registered was150 thesample solution wasplaced in a
for an isothermal expansion of 100 mole of ideal gas at 399k and initially at 1600bar pressure compare the total work