What happens in a single-replacement reaction? A. One reactant breaks apart to form new compounds.
O B. One reactant replaces an element in another reactant.
O C. Two reactants combine to form one product.
O D. Two reactants exchange elements with each other.

C) electrons encircling a nucleus with neutrons and protons

Ithink that’s it’s b

Um i think answer is a

Those are different gas lawshere is a brief description of themcharles's law states that volume and temperature are directly proportional to each other as long as pressure is held constant.  boyle's law asserts that pressure and volume are inversely proportional to each other at fixed temperature.gay-lussac's law introduces a direct proportionality between temperature and pressure as long as it is at a constant volume.    source: