Question

2 Hgo 2 Hg + O2

1. How many grams of mercury (Hg) can be

produced from 3.55 moles of Hgo?

Answer 1

Using the stoichiometric relationship from the provided chemical equation, 3.55 moles of HgO will produce 712.09 grams of mercury, as the molar ratio of HgO to Hg is 1:1 and the molar mass of Hg is 200.59 g/mol.

Step-by-step explanation:

The question relates to stoichiometry, which is a branch of chemistry that deals with the quantitative relationships between the substances consumed and produced in chemical reactions. According to the given chemical equation, 2 HgO → 2 Hg + O2, we can see that 2 moles of mercury(II) oxide (HgO) produce 2 moles of mercury (Hg).

To calculate the mass of mercury produced from 3.55 moles of HgO, we utilize the stoichiometry of the chemical equation.

Since the molar ratio of HgO to Hg is 1:1, 3.55 moles of HgO will produce 3.55 moles of Hg. The molar mass of Hg is approximately 200.59 g/mol, so:

Mass of Hg = moles of Hg × molar mass of Hg

Mass of Hg = 3.55 moles × 200.59 g/mol = 712.09 g

Therefore, 3.55 moles of HgO will produce 712.09 grams of mercury (Hg).

Answer 2

712 moles of Hg are produced

Step-by-step explanation:

Based on the reaction:

2HgO → 2Hg + O₂

Where 2 moles of HgO reacts producing 2 moles of Hg and 1 mole of O₂

To solve this question we need to find the moles of Hg produced, then, using its molar mass:

Moles Hg:

3.55mol HgO * (2 mol Hg / 2 mol HgO) = 3.55 mol Hg

Grams -Molar mass Hg: 200.59g/mol-:

3.55mol Hg * (200.59g/mol) =

712 moles of Hg are produced