Question

If 10.0 moles of Hg react with 4.0 moles of O2, how many moles of HgO will form?

a) 8.0
b) 2.0
c) 4.0
d) 16

Answer 1

When 10.0 moles of Hg react with 4.0 moles of O2, 10.0 moles of HgO will form.

Step-by-step explanation:

To determine the number of moles of HgO formed when 10.0 moles of Hg reacts with 4.0 moles of O2, we need to balance the chemical equation:

2Hg + O₂ → 2HgO

The mole ratio between Hg and HgO is 2:2, so for every 2 moles of Hg, 2 moles of HgO will form. Therefore, if we have 10.0 moles of Hg, we will have 10.0 moles of HgO.