You purchase several rolls of fiberglass insulation and pay extra for installation. Have you purchased a product or a service?

If the root word engage means “to connect with something,” what does the word disengage mean in the following sentence? he disengaged the gears by stepping on the clutch pedal.a.added more engine powerb.activated a connection to the pedalc.stalled the engined.released a connection to the pedal

What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure