What is the change in enthalpy 180 g of water vapor condenses at 100°C

What statement best describe pseudoscience

An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of this isotope.

8. How do you know when kinetic energy is not changing?

What happens when an electron moves from a high energy level to a lower one? A. it absorbs light B. it emits light C. it disappears D. it gets bigger

Explain in terms of particle arrangement why nacl (aq) is a homogeneous mixture

a dynamic state where two opposing forces are in balance, where two opposite event are occurring at equal rate is

What is mitosis in a living cell?

Which of the following statements is true? A. Some chemical reactions release energy, and other chemical reactions absorb energy. B. Chemical reactions, by definition, cannot absorb or release energy. C.

4 Properties of Bases?

Which statement best describes the intermolecular forces between N2 molecules and NH3 molecules in the solid phase? A.