Dry the product on filter paper, weigh it, and calculate the yield 1,4-dimethoxybenzene: mw 138.16, mp 57°c 1-butyl alcohol: mw 74.12, den. 0.79 1,4-di-t-butyl-2,5-dimethoxybenze: mw 250.37, mp 104-105°c 7) measure the melting point of the product sulfuric acid is corrosive. exercise caution during its use dispose of hazardous waste in the designated containers

Afraidsugar lol it’s the third one

D. h2o + h2o > h3o + oh- confirmed.

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: