3 years ago

How many electrons would found in the ion who’s symbol is I-?

Chemistry

1 answer:

inna [77]3 years ago

7 0

Answer:

54 electrons

Explanation:

I(iodine) has 7 electrons on the last level, so it can take 1 more electrons.

I- also shows that 1 additional electron was added. (I^-1)

I (iodine) has 53 electrons.

So, I- will have 54 electrons.

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The alkali metals all react with water. which is the most reactive metal?

kifflom [539]

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3 years ago

How many moles are in 123.0g (NH4)2SO4

Luda [366]

Here you go! There are 0.9307 moles in 123.0 g of the compound. I solved this by using a fence post method. I calculated the number of grams in one mol of (NH4)2 SO4 and got 132.16.

I did this by finding the atomic mass of each element on the periodic table (my work is in the color blue for this step)

After that, i divided the given mass by the mass of one mol of the compound.

The answer is 0.9307 moles!! I hope this helped you! :))