Which of the following balances has the least uncertainty? (PSS.1) Group of answer choices

platform balance, +/- 0.1 g

analytical balance, +/- 0.0001 g

All balances have the same uncertainty

triple-beam balance, +/- 0.01 g

electronic balance, +/- 0.001 g

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

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

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.