The chart seen here shows the decay of a sample of carbon-14 over a period of 33,000 years. what is the approximate half-life of carbon 14?

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Which of the following isotopes has the same number of neutrons as phosphorus-31?

If volume remains the same while the mass of a substance the density of the substance