That's just the tip of the iceberg" is a popular expression you may have heard. it means that what you can see is only a small part of the overall problem. as the diagram shows, most of an iceberg is actually out of sight, below the water level. based on this diagram, what is the most likely density of the iceberg? (assume a density of 1.03 g/ml for seawate

A

Explanation: This means that its density is slightly less than the density of seawater. An object with a density of 0.23 g/cc will float much higher in the water. An object with a density greater than 1.03 g/cc would sink. Therefore the most likely density of the iceberg is 0.88 g/cc.

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:

i would say b

explanation:

but i think i would need more information than that