Which is the best reason to carry out scientific research on climate change? A. To help people prepare for the future
O B. To create jobs for scientists
C. To elect better-informed politicians
D. To win political debates

Which is the best reason to carry out scientific research on climate change?

A. To help people prepare for the future

C. To elect better-informed politicians

D. To win political debates

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:

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.