How do the bohr model and the quantum mechcanical model of the atom differ in how they describe electrons?

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

One or more substances changing into one or more substances is an example of a

How many atoms are there in 5.70 mol of mg