19.5 g O2 is equal to how many moles of O2? moles O2

An example of technology is the a. addition of a side group to an organic molecule during synthesis. b. use of a new antibiotic to fight an infection. c. measurement of iron concentration in a water sample. d. study of atomic fusion reactions

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?