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svet-max [94.6K]
3 years ago
13

What is the rule for elements with two letters in the symbol?

Chemistry
2 answers:
Sergio039 [100]3 years ago
5 0
First letter is capital and second is lower case
Mumz [18]3 years ago
4 0

Answer:

In these two-letter symbols, the first letter is always capitalized and the second is always lowercased.

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Which substance is the oxidizing agent in this reaction? fe2o3+3co→2fe+3co2 express your answer as a chemical formula?
erma4kov [3.2K]
Equation is as follow,

                            Fe₂O₃  +  3 CO     →     2 Fe  +  3 CO₂

Oxidation:

                                        3 CO     →     3 CO₂

Oxidation state of C in CO is +2, and that in CO₂ is +4. So, carbon has lost 2 electrons per mole and 6 electrons per 3 moles hence,

                                 3 CO     →     3 CO₂  +  6 e⁻

Reduction:

                                    Fe₂O₃     →     2 Fe

Oxidation state of Fe in Fe₂O₃ is +3 per atom, and that in Fe is 0. So, Iron has gained 3 electrons per atom and 6 electrons per 2 atoms hence,

                                    Fe₂O₃  +  6e⁻     →     2 Fe

Result:
             Iron in Fe₂O₃ has been reduced in this reaction and has played a role of oxidizing agent by oxidizing carbon from +2 state to +4 state.
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3 years ago
Recently you viewed a movie in which a spaceship blows up outside a space station. The people inside the space station jump with
Vlad1618 [11]

Answer:

Sound needs a medium through which to travel.

Explanation:

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Answer: Given equal masses, water will heat up less than wood if the same heat is added.

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Answer:

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Explanation:

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