A powder contains benzoic acid mixed with starch. A student finds that a 2.505 g sample of this powder requires 35.2 mL of a 0.102M sodium hydroxide solution for the acid to be neutralized. What is the percent by mass of benzoic acid in the powder? Use the correct number of significant figures and do not include units (or percent sign) or your answer will be counted wrong.

668900 atoms in total

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na