Zn + 2MnO2 + H2O -> Zn(OH)2 + Mn2O3 If 30.0 grams of zinc and 45.0grams of manganese oxide are reacted with excess water what is the limiting reactant?

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

Which three statements represent the benefits of performing experiments using computer simulations?

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released