Question

DUE IN 30 MINUTES!!! (please keep it short if you can, if not its ok.) What is the molar mass of Pb(SO4)2? Explain how you calculated this value. (4 points)

Answer 1

Answer:

The molar mass of Pb(SO₄)₂ is 399.32.

Explanation:

To find the molar mass of Pb(SO₄)₂, you have to find the molar mass of each individual element that makes up the compound.

Let's start by figuring out how many of each element is present in the compound.

Pb (lead) - 1

S (sulfur) - 2

O (oxygen) - 8

(SO₄)₂ is a polyatomic ion. It is written in parentheses followed by a subscript of 2. This means that there are two sulfate ions in the compound. So, the number of sulfur atoms and oxygen atoms doubles. (1 × 2 = 2) and (4 × 2 = 8).

Next, look up the molar mass of each element on a periodic table and multiply it by the number of atoms present.

Pb - 207. 2 × 1 = 207. 2

S - 32.06 × 2 = 64.12

O - 16.00 × 8 = 128

Lastly, add up them all together to get the molar mass.

207. 2 + 64.12 + 128 = 399.32

Answer 2

Answer:

399

Explanation:

Pb(SO4)2 contains 1 atom of Pb, 2 atoms of S and 8 atoms of O. So, atomic mass of Pb(SO4)2 is 207 + 64 + 128 = 399 u. Therefore, molar mass of Pb(SO4)2 is 399 g/mol.HOPE THIS helps. Good Luck