Phosphorus (P) is a nonmetal, which is a poor conductor of heat and electricity. Which of the elements listed below shares these properties? Group of answer choices

strontium (Sr)

sodium (Na)

iodine (I)

calcium (Ca)

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.) circle motion requires a force to give it a centripetal acceleration.

personal, she chose to do it.

intensive properties because they do not depend on the amount of matter in the sample.