Hbr + khco3 --> h2o + kbr + co2 if i do this reaction with 30 grams of hbr, how many grams of carbon dioxide will be formed? make sure u use factor label method and show work!

Mass of carbon dioxide = 17.6 g

Explanation:

Given data:

Mass of HBr = 30 g

Grams of carbon dioxide produced = ?

Solution:

Chemical equation:

HBr + KHCO₃   → H₂O + KBr + CO₂

Number of moles of HBr:

Number of moles = mass/ molar mass

Number of moles = 30 g/ 80.91 g/mol

Number of moles = 0.4 mol

Now we will compare the moles of HBr and CO₂.

                             HBr                    :               CO₂

                               1                       ;                 1

                              0.4                    :              0.4

Mass of carbon dioxide:

Mass = number of moles × molar mass

Mass = 0.4 mol × 44 g/mol

Mass = 17.6 g

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:

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.