QUESTION 8 If 0.153 L of 0.104 M Na2SO4(aq) is combined with 0.175 L of 0.209 M NaCl, what is the concentration of Nations in the final solution, assuming the inal volume is the sum of the volumes of the two solutions? (Write your answer in 3 significant figures)

Question 8 : 

First we need to calculate moles of Na⁺ from both solutions separately using the given concentration and volume . 

Then we would Calculate total moles of Na⁺ ions in solution given by both compounds. 

Then using total moles and total volume, we can calculate final concentration. 

Note : Since you have asked multiple questions, so I'll answer first question here. If you need answer for specific other question please upload that separately.