Answer to Question #129948 in General Chemistry for Mary

Question

Hi,
Solutions of sodium hydroxide (volume = 90.0 mL) and nitric acid (volume = 95.0 mL) were mixed together in a neutralization reaction.
Calculate the mass of the combined solution.
We can assume the density of the solution to be the same as water, 1.00 g/cm3.

Please Give you answer to three significant figures.
Thanks

Answer 1

m (combined solution) = V (combined solution) * density ;

m (combined solution) = (V(sodium hydroxide) + V (nitric acid)) * density ;

m (combined solution) = (90 (mL) + 95 (mL)) * 1 (g/mL)=185 (g).