How many grams of oxygen are needed to completely burn 45 grams of C, H,? The molar mass of CHis 26.038 g/mol. The molar mass of O, is 31.998 g/mol. Round your answer to a whole number. 2C2H2(g) + 502(g) → 4CO2(g) + 2H,0 (1) 3​

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:

the answer is the first option

explanation:

just googled it m8. not that hard

lol

i would say b

explanation:

but i think i would need more information than that

6.4 cm (max) - 25 cm (min)