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explain why is it necessary to determine the temperature during the determination of the density of the sodium chloride
define how each of the following errors would affect the determination of the mass of the sodium chloride collecteda
explain the wavelengths of several photons are provided below explain which photon has the largest energy be careful
compute the number of atoms in the subsequent unit cells a body-centered cubic structure b hexagonal structure ii
a presuming a concentration of 1200ppmv explain what will be the ph of rainwater assuming co2 is the merely compound
compute the ph of a buffer solution obtained by dissolving 280g of kh2po4s and 380g of na2hpo4s in water and then
regard as the chemical reactions taking place during the electrolysis experiment explain which observations should you
determine a set of proteins that have masses of 15 22 50 and 75 kda utilizing the diagram below decide which of the
the vapor pressure of a liquid double while the temperature is raised from 90 degrees celsius to 100 degrees celsius
nacl is dissolved in two beakers one beaker contains pentane c5h12 as well as one beaker contains pentanol c5h11oha in
survival of trout needs water in which the oxygen concentration is greater than 5 ppm a 100-ml sample of lake water was
dissolved oxygen in water will oxidize an alkaline suspension of mnoh2 to mnoh3 o2g 4mnoh2 2h2o 4mnoh3 upon being
uric acid dissociates as exposed in the figure at the right with a pka of 580 as well as can be treated as a simple
a 250-ml sample of household bleach was diluted to 500ml in a volumetric flask an unmeasured surplus of ki was added to
the amount of ascorbic acid c6h8o6 in orange juice was computed by oxidizing the ascorbic acid to dehydroascorbic acid
a monophonic acid ha is dissolved in water the equilibrium concentrations of the reactants as well as products are ha
in a hurry to complete the experiment joseph failed to calibrate the spectrophotometer as a result all absorbance
depict the organic product of the acid-base reaction between the species shown below two equivalents of -oh are
compute the volume of 020 m naoh required bringing the ph of 20ml of 5 acetic acid to 474 the pka of acetic
a phosphate buffer solution contains 008 m k2hpo4 and 012 m kh2po4 pka values for h3po4 are 2 68 and 122 compute the
the uranium minerals found in nature should be refined and enhanced in 235u before the uranium can be utilized as a
a mixture of acetone as well as toluene is boiled at 80 degrees c and at 760 mmhg explain what is the ratio of acetone
explain the boiling point of benzene is 81 degrees celsius define what is the vapor pressure at the
if lambda subzero is 266e 05 compute alpha if the conductivity of a 723 e-03 m mgso4 is 1255
compute why you must have a liquid flowing back through the fractionating column in order to get the separation of the