Answer: The millimoles of sodium carbonate the chemist has added to the flask are 256
Explanation:
Molarity is defined as the number of moles dissolved per liter of the solution.
To calculate the number of moles for given molarity, we use the equation:
[tex]\text{Molarity of the solution}=\frac{\text{milli moles of solute}}{\text{Volume of solution in ml}}[/tex] .....(1)
Molarity of [tex]BaCl_2[/tex] solution = 1.42 M
Volume of solution = 180.0 mL
Putting values in equation 1, we get:
[tex]1.42M=\frac{\text{milli moles of }BaCl_2}{180.0ml}\\\\\text{milli moles of }BaCl_2}={1.42M\times 180.0ml}=256milli mol[/tex]
Thus the millimoles of sodium carbonate the chemist has added to the flask are 256.
