Does the law of conservation of energy, law of conservation of matter, or neither apply to an open system? Does the law of conservation of energy, law of conservation of matter, or neither apply to an closed system?

Does the law of conservation of energy, law of conservation of matter, or neither apply to an isolated system?

I said neither applies to an open system, the law of conservation of energy applies to an isolated system, and the law of conservation of matter applies to a closed system. I dont like thats right but i need someone to tell me. please!

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

What extra step distinguishes fermentation from glycolysis

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms