If mercury (hg) and oxygen (o2) were reacted to form mercury oxide how many molecules of each reactant and product would be needed to balance the equation?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.