The reaction between calcium carbonate (CaCO3) and HCl produces calcium chloride (CaCl), carbon dioxide (CO2), and water (H20) What
happens when the concentration of hydrogen chloride (HCl) molecules is doubled in this reaction?
CaCo3 + 2HCl - CaCl2 + CO2 + H20
, which causes
When the hydrogen chloride concentration doubles, the number of collisions between the reactants
the rate of the forward reaction to

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:

you need to have a picture of the atom that way we can answer it