From a sample containing manganese sulfate, 1000 grams are taken and made up to 50 ml volume. Next, 25 ml of this solution is taken. Mn^+2 is titrated with 0.1M KMnO4. Consumption is 13ml. Another 1,000 gram portion taken is dissolved in some distilled water and precipitated with excess Ba2+ at pH:1. After the precipitate obtained is filtered and washed, the precipitate is boiled with 50mL of 0.125 M Na2EDTA solution and Ba2+ ions are taken into the solution as Ba(EDTA)2- complex. How many mL of 0.087M MgSO4 solution should be used for excess Na2EDTA?

Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.

What shape would a molecule with two bound groups and two lone pairs have?

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.