Achemist prepares a solution of sodium carbonate (na2co3) by measuring out 28 î¼gol sodium carbonate into a 300ml volumetric flask and filling the flask to the mark with water. calculate the concentration in î¼mol of the chemist's sodium carbonate solution. round your answer to significant digits.

Question in incomplete , complete question is;

A chemist prepares a solution of sodium carbonate by measuring out  28μg of sodium carbonate into a  300 mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in μmol/L of the chemist's sodium carbonate solution. Be sure your answer has the correct number of significant digits.

is the concentration of the chemist's sodium carbonate solution.

Explanation:

Mass of sodium carbonate = 28μg =

Volume of the solution = 300 mL = 300 × 0.001 L= 0.3 L

( 1 mL = 0.001 L)

Moles of sodium carbonate =

is the concentration of the chemist's sodium carbonate solution.

false

because it does not have the potential to be entirely used up

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.