PLEASE HELP! WILL AWARD BRAINLIEST Question 1
Which of the following represents the number of grams of a solute in 100 grams of a solution?
a
Density

b
Molarity

c
Percent by mass

d
Volume

Question 2
The pOH of a solution is 8.3. Which of the following is true about the solution? (1 point)

a
It is acidic and has a pH of 5.7.

b
It is acidic and has a pH of 3.8.

c
It is basic and has a pH of 5.7.

d
It is basic and has a pH of 3.8.

The answer for number one is (a)

The answer for number 2 is (b)

Explanation:

#1. Mass/volume=density

#2. The solution is basic and a solute is sugar so in order for it to be basic you would have had to add the sugar to something acidic, and with the ratio of the solute to solution the acidity is 3.8

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:

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it