Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. Which type of model would be best for what he needs?

Im the only noble gas with 2 electrons

What mass is needed for 5000 moles of iron.

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

How do orbitals are related to energy levels.

When phosphorus (P) and bromine (Br) bond, what kind of bond would happen?

What did scientists observe using the earliest microscopes

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves

Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra electron) accelerated through the same voltage, assuming non-relativistic final speeds. Take the mass of the hydrogen ion to be 1.67*10^{-27} kg.

A type of rock that undergoes changes because of heat and pressure