HELP ASAP DUE IN 2 HOURS 1. A solution has a [H+] of 0.20 M. Find the pH of this solution.
2. A solution has a [H+] of a 0.00200 M . Find the pH of this solution.
3. A solution has a [OH-] of 0.050 M. Find the pH of this solution.
4. A solution has [H+] = 2.35 × 10-3 M. Find the [OH-] for this solution.
5. A solution has pOH = 5.640. Find the [H+] for this solution. (Hint: Find pH first. Then use the formula [H+]= 10-pH to solve for [H+] )

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

When a septic tank backs up a goes in to clean it out