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tantalum 1809479 gmol has a body centered cubic crystal structure with an edge length of 33058 pm as well as a density
depict the structural formula for compounds 1 to 5 a certain alcohol c4h10o 1 gives a reaction with chromic acid 2 the
you have 875ml of a 043 m acetic acid solution explain what volume v of 110 m naoh solution must you add in order to
a student in a quantitative analysis laboratory is to find out the concentration of a sodium hydroxide solution the
a solve for the number of grams of ca2 ion in a solution prepared by adding 1 gram of calcium oxalate powder to 100ml
explain why you might expect that the dehydration of 1-butanol as well as 2-butanol would produce a similar composition
if the ethyl acetate concentration in an alcoholic solution was determined by diluting a 1000ml sample to 10000ml a
compute the ph of solution made by mixing 5ml of 02m hcl with 25ml of 02m nahcoo and diluted to
a 0879g sample of a cacl22h2ok2c2o4h2o solid salt mixture is dissolved in 150ml of deionized water previously adjusted
method 11 add 95 ml of methanol to each flask2 now add the following amounts of toluene concentration 1000mg l-1 to
the effect of temperature on the enzyme beta-glucosidaseto investigate the effect of temperature on the enzymatic
initially 5 mol of an ideal gas with cvm125 j k-1 mol-1 are at a volume of 5 dm3 and a temperature of 300k if the gas
equilibrium is established between br-br l and br-br g at 25 c a 2500ml sample of the vapor weighs 0486g explain what
if an enhancer is placed on one plasmid as well as its corresponding promoter is placed on a second plasmid that is
if 736 g of an unknown gas occupies 791ml at 2502 c and 755atm pressure explain what is the molecular weight of that
the enthalpy of vaporization of benzene is 339 kjmole at 298k explain how many liters of c6h6 g measured at 298 k and
a chemist is trying to recognize a human hormone that controls metabolism by finding its molar mass a sample weighing
calcium reacts with oxygen to make calcium oxide cao explain what is the maximum mass of caos in grams that could be
explain what is the fraction of association for the subsequent potassium propionate solutions ignore activities the ka
compute the molarity of a 415 mass percent sodium hypochlorite naocl solution the density of the bleach solution is 111
hard water deposits are largely caco3 propose a way to remove these deposits from plumbing
limestone is another form of caco3 sandstone is primarily silica or sand sio2 because of observations made in todays
a line in the hydrogen spectrum has a wavelength of 4345 nm if this line results from the transition of an electron
an unknown metal is found to be arranged in a fcc structure the density of the metal is 891gcm3 as well as the edge
a solution of 500g of an organic compound in 2500 g carbon tetra chloride boils at 848 degrees celsius explain what is