Please help me i'll mark you B

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same