Percent occurrence and isotope masses for oxygen: 99.759 % at 15.99491 amu, 0.037% at 16.99913 amu and 0.204% at what amu value if the average atomic mass is 15.99937 amu?

The minerals found in bones are deposited by living cells called

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.