Can someone help me understand this please?

According to the balanced chemical equation 5 h2c2o4(aq) + 2 mno4-(aq) + 6 h+(aq) → 10 co2(g) + 2 mn2+(aq) + 8 h2o(l) 0.875 grams of oxalic acid, h2c2o4 will react with moles of permanganate, mno4-.

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

What is the mass of naoh that would have to be added to 500 ml of a solution of 0.20 m acetic acid in order to achieve a ph of 5.0?