Determining percent error: A student was supposed to measure 200.0 milliliters of water and obtained 196.0 milliliters instead. Her partner was supposed to measure 50.0 mL of water and obtained
48.0 mL instead. Determine who had the largest percent error in correct sig figs. The equation is shown.
Formula for % error= (measured -true)/ true x 100

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:

12 is it do you think so

pv=nrt

explanation: