FE is iron
iron is an element
so the answer is element 0-0
Explanation:
I think it is a true statement .
Answer:
Etching is used to reveal the microstructure of the metal through selective chemical attack. It also removes the thin, highly deformed layer introduced during grinding and polishing. ... The specimen is etched using a reagent.
Explanation:
hope it was helpful.....
Answer:
Yes.
Explanation:
Yes, both the first and second element in the formula of covalent compound always receive a prefix to represent the number of each element present in the formula in order to show the percentage or proportion of each element in the formula of covalent compound. Prefix refers to addition of word, letter, or number at the beginning of something so here number placed in front of element indicates the prefix.
3,91·10²⁴ = 39,1·10²³
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110,96g ----------- 6,02·10²³ molecules
Xg ------------------ 39,1<span>·10²³ molecules
X = (110,96</span>×39,1·10²³)/<span>6,02·10²³
<u>X = 720,687g</u>
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