The correct answer is A. An element cannot be separated into simpler substances or converted into another substance by chemical processes. Elements are the most simplest form of the chemicals. They are what we see in the periodic table.
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I have the same question why can’t I accept this comment HELPPP 3737
Adding a volatile liquid in the Erlenmeyer flask will increase the total pressure inside the flask. This is because inside the flask, there will be two components: the vapor and the liquid. Each of which will exhibit or exert their own pressure. Thus, the answer to this item should be false.
The SI unit for distance is metres - m.
The SI unit for speed or velocity is metres per second - m/s.
The SI unit for acceleration is metres per second squared. - m/s^2.
