How many moles of mercury(ii) oxide, hgo, are needed to pro- duce 125 g of oxygen, o2?

Write out the balanced equation:

2HgO > 2Hg + O2

Convert grams of O2 to moles:

(125g of O2 * 1 mole)/ 32g of O2 = 3.91

Look at the ratio with HgO to O2:

2:1

Therefore:

3.91 * 2 = 7.82

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!