Chemical formula for Mercury(II)Chloride, Potassium nitrite, Aluminum hydroxide, Sulfure Dioxide. Let me see if I am right for the ones I completed, okay for Potassium nitrite I put KNO^- and subscript 2 and for Aluminu hydroxide I put AlOH^-.
I also need you to fill in this blank: The formula of a compound may represent the composition of the compound and the mass of ________ mole of that compound
mercury(II) chloride HgCl2
potassium nitrite KNO2 correct.
aluminum hydroxide Al(OH)3
sulfur dioxide SO2
Because it is so much trouble to write the subscripts. we usually just do it this way. HgCl2, KNO2, Al(OH)3, SO2.
If we want to show a superscript, we write a caret (upper case 6), then the number;e.g.,
X3 we write as X^3.
I think on fill in the blank you are looking for the word "one". That is, SO2 tells us that is sulfur dioxide, that written that way is 1 mole of SO2, and 1 mol has a mass of 32(for S) and 32(2x16)for O for a total of 64 grams.Thanks for using Jiskha.
Yes, you are correct with the chemical formulas you provided:
- Mercury(II) chloride: HgCl2
- Potassium nitrite: KNO2
- Aluminum hydroxide: Al(OH)3
- Sulfur dioxide: SO2
Those are the correct simplified versions of the formulas.
As for the blank, you are right again. The formula of a compound represents the composition of the compound and the mass of one mole of that compound. So, in the case of the compound written as a formula, it represents the mass of one mole. In the example you gave, SO2 represents one mole of sulfur dioxide, which has a mass of 64 grams (32 grams for sulfur and 32 grams for oxygen).
I hope that clarifies everything for you. Let me know if you have any other questions!