The labels on a shipment of the five chemicals a-e were washed off by accident when the delivery truck went through a truckwash with the doors open. a clever student took infrared spectra of each of the resulting unknowns. unknown #1 had a strong, broad ir absorption at 3400−3600 cm−1, and no absorptions between 1600 and 2900 cm−1. unknown #2 had a strong absorption at 1680 cm−1 and no absorptions above 3100 cm−1. structure a is a cyclic ketone. structure b is an alcohol bonded to a ring. structure c is an enone, which is a carbonyl bonded to an alkene. structure d contains both an amide and an alcohol. structure e is an ester. what is unknown #1

the grams   of   barium that   are in   2.3 x 10^23   atoms of barium   is   52.4 g (answer c)

    calculation

mass = moles   of ba   x molar   mass of ba

  molar mass of ba from periodic table=   137.3 g/mol

  use the   avogadro's law   constant   to   calculate the moles of barium

  that   is     1 mole =   6.02   x 10^23 atoms

                    ? moles = 2.3 x 10^23   atoms

by cross   multiplication

=(1 mole   x 2.3x 10^23 atoms)   / 6.02   x10^23 atoms)=   0.382   moles

mass   is therefore = 137.3   g/mol x 0.382 mol = 52.4 ( answer c)

explanation:

did anyone actually do this? like if anyone has submitted this i rly need .

just did the assignment and the answer was #1 +2 n

answer7,570,82356 cubic centimeters;