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# Empirical Formula

HEY x.x

So I am stuck here (attached photo) I and don't understand the last two questions(3 and 4)? I am supposed to write the equation? If so, where to I go from there?

Also, in my background/theory for my lab report, it states that it should be a ratio of 1 to 1.

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HEY x.x

So I am stuck here (attached photo) I and don't understand the last two questions(3 and 4) ? I am supposed to write the equation? If so, where to I go from there?

Also, in my background/theory for my lab report, it states that it should be a ratio of 1 to 1.

Your calculations in (1) & (2) are wrong:

0.06 / 24.1 = 0.0025 (and not 0.004)

0.042 / 16 = 0.0026 (and not 0.026)

Hence for question 3, just take the ratio of the 2 results above by dividing 0.0026 with 0.0025 (as 0.0025 < 0.0026). We'll get about 1:1 ratio

For question 4, as the ratio is 1:1, then a molecule of magnesium oxide would contain 1 atom of Mg and 1 atom of Oxygen --> the formula is MgO

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HEY x.x

So I am stuck here (attached photo) I and don't understand the last two questions(3 and 4) ? I am supposed to write the equation? If so, where to I go from there?

Also, in my background/theory for my lab report, it states that it should be a ratio of 1 to 1.

Your calculations in (1) & (2) are wrong:

0.06 / 24.1 = 0.0025 (and not 0.004)

0.042 / 16 = 0.0026 (and not 0.026)

Hence for question 3, just take the ratio of the 2 results above by dividing 0.0026 with 0.0025 (as 0.0025 < 0.0026). We'll get about 1:1 ratio

For question 4, as the ratio is 1:1, then a molecule of magnesium oxide would contain 1 atom of Mg and 1 atom of Oxygen --> the formula is MgO

OH, I forgot about the significant figures and rounding in the calcs! Thank you!

Wow, thank you so much Vioh, I understand the questions now!