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nirvana33 [79]
3 years ago
15

Which of these elements has the largest atom? *

Chemistry
1 answer:
Anastasy [175]3 years ago
3 0
I think it is calcium?
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One of these notations represents the definition of one mole. That is
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Answer:

6.02*10^23

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<h3> The supplements that are minerals are</h3>
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3 0
3 years ago
Fe(NO3)2 not sure how to get the oxidation numbers of all elements
Shtirlitz [24]
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we have 2 NO3 groups so 2*(-1) = -2 and that is the reason why oxidation number of Fe in this formula must be +2... because sum of all elements always gives 0!

Now we could count of oxidation number for nitrogen... we write HNO3 and start counting from right to left:
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so nitrogen must have +5 oxidation number... because sum all in formula must be 0.


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