Target due: 3/18/20
bns
20. When the pH of a solution is 12.83, what is [H +)?
80%

O7.4 x 10 -12 м
O9.7 x 10 -11 м
o 12.8 x 10 -2 м
|
80%
О1.5 х 10 -13 м
68% С

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years