Question

Molar mass of SeOBr2 with work (PLEASE HELP ME!)

Answer 1

Answer:

254.77 g/mol

I don't know what you mean by "with work"

Explanation:

The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).

Answer 2

Answer:

$\boxed {\boxed {\sf 254.679 \ g/mol }}$

Explanation:

The molar mass is the mass of 1 mole of particles in a substance. We can calculate using values on the Periodic Table.

First, identify the elements in the compound: SeOBr₂.

• Selenium (Se), Oxygen (O), and Bromine (Br)

Use the Periodic Table to find the molar masses.

• Se: 78.97 g/mol
• O: 15.999 g/mol
• Br: 79.90 g/mol

Notice the formula has a subscript of 2 after bromine. This means there are 2 moles of bromine in 1 mole of SeOBr₂.

To calculate the molar masses, multiply bromine's molar mass by 2, then add selenium and oxygen.

$2(79.90 \ g/mol) + 15.999 \ g/mol + 78.97 \ g/mol \\159.80 \ g/mol + 15.999 \ g/mol + 78.97 \ g/mol \\254.679 \ g/mol$

The molar mass of SeOBr₂ is 254.679 grams per mole.