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Now this one has to be from memory since it is too easy to look up. Don't cheat...
Part 1. Name the four most abundant ions in seawater, in decreasing order of weight-based concentration (that is, decreasing order of ppm).
Part 2. Same question, but in decreasing order of the number of ions in seawater.
I'd rate it fairly hard since the majority of reefers may not have memorized this list.
Good luck and feel free to guess. That's part of the fun. We won't belittle any guesses.
Part 1. Name the four most abundant ions in seawater, in decreasing order of weight-based concentration (that is, decreasing order of ppm).
Part 2. Same question, but in decreasing order of the number of ions in seawater.
I'd rate it fairly hard since the majority of reefers may not have memorized this list.
Good luck and feel free to guess. That's part of the fun. We won't belittle any guesses.