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1it is noted that pure ethanol ch3ch2oh has density 080625 gcmsup3 at 00deg c and density of 078945 gcm sup3 at 200 degc calculate the difference in
1if the methane ch4 contained in 200 l of a saturated solution at temperature of 25 degree celsius was extracted and placed under stp conditions
q a boy has a newly minted penny that is composed of zinc and copper in actual composition it contains 27 percent of cu determine the density of
1it is noted that an iron nail was with the 12gms mass absorbs heat of 15 joule you need to calculate the final temperature if initially this iron
there are some given compounds ch3br rbf ch3oh co2arrange all these compounds in order of increasing boiling points and also give explanation for
1write down the electron configuration of the b ion using the noble gas core notation2what you will expect for the molecular formula c7h6o2 benzoic
1given that nickelii perchlorate that is a polyatomic ion with the formula clo41- dissolving in water first of all write down the dissolution
1determine what is the activation energy of ch3cooch32considering the given chemical equation as caco3s-caosco2g calculate kc for the reversible
1explain what it means that the atomic mass of naturally occurring ag is a mixture of its two isotopes forms is 107868 u2consider the given chemical
1 calculate how many n atoms are there in the empirical formula for this given compound when the reported analysis of this compound observed that
compute the thermal-equilibrium values of hole and electron concentrations while considering a homogeneous gallium arsenide semiconductor at the
1girl a dilutes 10 ml stock solution to a final volume of 20 ml girl b dilutes 10 ml stock solution to a final volume of 40 ml girl c dilutes 10 ml
a naturally occurring element a exists in three forms of its isotopes a-28 27977 amu 9223 abundance a-29 28976 amu 467 abundance and a-30 29974 amu
just find out what mass of the nahco3 reacts with the vitamin c when the tablet dissolves in h2o it fizzes because the reason for this is the cho3
q1determine the mass of a sample of hg that occupies a volume of 475ml if the specific gravity of mercury 1363 q2determine what is element y if you
1isomerization of cyclopropane to propene is yielding the activation energy for this process is 274 kjmol by what factor the factor is the ratio of
q1if 2164ml of 944times10-4m kmno4 solution is required for the titration calculate how many mgs of ca2 are present in 120ml of bloodq2determine the
physiological saline solution contains 090 nacl solution used in this intravenous injections determine how many grams of sodium chloride are required
q determine what is the mass of gasoline in tank of your cars if it is filled to its capacity of 150 gallons given that gasoline has a density 067
calculate the specific heat capacity of a sample liquid if this 100 g sample of an unknown liquid absorbs 2000 j of heat energy raising the liquids
determine what is the observed rate for the given reaction 2 o3g -rarr 3 o2g has an empirically determined rate law with a single unimolecular
as we know many volatile substances are present in earths atmosphere in trace amounts the given quantities of these trace gases a 4887 1017 atoms of
using the information below calculate the mass of benzene in each phase and find the total mass of benzene at the site distances in metersc water
1 a laboratory column is filled with soil and then saturated with water the data arethe head loss through the soil column is 45 cm when pumped at q
testing the bounds of natural fibresthe purpose of this experiment is to find out which fabric out of polyester polypropylene cotton and wool is the