rainbowboy6055
11.10.2019 •
Chemistry
An element m forms a hydride m h subscript 3which contains 90% of m by mass. what is the relative atomic mass of m?
87
90
27
30
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Ответ:
Which of the following is the main reason to use titration in chemistry?
Titration- to determine the concentration of an unknown acid or base
to find the molarity of an unknown acid or base