We consider the following atoms characterized by the couple (Z, A). (14, 28) , (7, 14) , (27, 59) , (13, 27) , (14, 29) , (7, 15) , (14, 30).
a. Choose the isotopic elements.
b. What are the elements represented?

What is the temperature of one mole of helium gas at stp?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

Aseismic wave is energy released as the result of rock movement along a fault. t or f ?