In the simulation, open the Custom mode. The beaker will be filled to the 0.50 LL mark with a neutral solution. Set the pHpH to 6.80 by using the green arrows adjacent to the pH value indicated on the probe in the solution. Once you adjust the pHpH, note the corresponding OH−OH− ion concentration in MM as given in the graphic on the left side of the simulation. Make sure to select the option "Concentration (mol/Lmol/L)" above the graphic. Select on the Logarithmic scale below the graphic. Find the pOHpOH of the solution.

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?