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2 years ago

Exactly 1 mol Hg2(NO3)2 contains how many moles of Hg , N , and O ?

Chemistry

1 answer:

marin [14]2 years ago

6 0

In exactly 1 mol Hg₂(NO₃)₂ , there are 2 mol Hg, 2 mol N and 6 mol O.

Since the molecular formula of Hg₂(NO₃)₂ shows that for every mole of the substance, we have 2 moles of Hg, 2 moles of N and 6 moles of O.

So, in exactly 1 mol Hg₂(NO₃)₂ , there are 2 mol Hg, 2 mol N and 6 mol O.

Learn more about number of moles here:

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An alcohol is 68.84 % C and 4.962 % H by mass. The rest is oxygen. What is the empirical formula of the alcohol? Enter the eleme

Dafna1 [17]

The empirical formula is C₇H₆O₂.

Assume that you have 100 g of the compound.

Then you have 68.84 g C and 4.962 g H.

Mass of O = (100 – 68.84 – 4.962) g = 26.20 g O.

Now, we must convert these masses to moles and find their ratios.

From here on, I like to summarize the calculations in a table.

Element Mass/g Moles Ratio ×2 Integers

C 68.84 5.732 3.501 7.001 7

H 4.962 4.923 3.006 6.012 6

O 26.20 1.638 1 2 2

The empirical formula is C₇H₆O₂.

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