Please answer quick 2. Imagine you have two beakers. Both beakers are filled with the same amount of water. The water in both beakers is the same temperature as well. You add 50 g ofSubstance A to the first beaker, and 50 g of Substance B to the second beaker. After stirring both beakers, there is a small pile Substance A at the bottom of the first
beaker. None of Substance B is visible in the second beaker. Which of the following statements is true?
A. Substance A is less soluble in water than Substance B.
B. Substance A is more soluble in water than Substance B.
C. Substance A is not soluble in water,
D. Substance B is not soluble in water,

A. Substance A is less soluble in water than Substance B.

Explanation:

Solubility: The term "solubility" is described as a specific property determining the capability of a particular solute, substance to get dissolve in a "solvent". Thus, solubility is being measured with respect to the "maximum amount" of a specific solute that is dissolved or mixed in a solvent at "equilibrium". After the given process, the resultant solution is referred to as a saturated solution.

In the question above, the correct answer is option-A.

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: