How long do you think it would take to create a canyon as deep as the Grand Canyon? Explain your reasoning.

Which compound contain an iron with a 3+ charge

What is the percentage of hydrogen in nitrogen trihydride

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.