Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 63.0 grams of gold?

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?

Using the periodic table, complete the table to describe each atom. type in your answers

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.