(No link sharing) The Law of Conservation of Mass states that

A. chemical reactions destroy matter, which
decreases the mass of the substance,

B. chemical reactions create new matter, which
will increase the mass of the substance,

C. matter cannot be created or destroyed, just
changed

When balancing a chemical equation:

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.