What would be evidence to prove that the sedimentary rock layers found on the banks of a river were formed over a period of millions of years? a) fossils from different geologic eras have been found in the rocks. b) the river has not changed course significantly for many years. c) the fossils in the rocks belong to the early cenozoic era. d) the sedimentary layers are not clearly visible.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide