Phase Inspection. 1  Inspect the electrical system as a whole including outlets, GFCI & AFCI protection, switches, fixtures, panels, circuit breakers & disconnects. 2  Inspect the plumbing for any visible leaks, drips, water supply, proper venting of the drains and waste lines.
Answer: The most abundant element in the universe is hydrogen, which makes up about 3/4 of all matter! Helium makes up most of the remaining 25%. Oxygen is the third most abundant element in the universe. All of the other elements are relatively rare. The chemical composition of the earth is quite a bit different from that of the universe. The most abundant element in the earth's crust is oxygen, making up 46.6% of the earth's mass.
There are a couple of ways to answer this. 1  The element with the most collective mass in the universe is: Hydrogen (75%) 2  The element with the most collective mass on earth is Oxygen (about 46%) 3  The most massive atom that is stable is lead. 4  The most massive naturally occurring element that we know of is Uranium with an AMU of 238. There might be some wiggle room here. Some think there might be one of two that are bigger. But anything above Uranium was artificially made or lasts only a very brief period of time.