7. Which of the following can speed up the
rate of a chemical reaction?
A. removing a catalyst
B. lowering the temperature
C. lowering the reactant concentration
D. breaking up a reactant into smaller pieces

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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: