Question

What is the molar mass of BaBr2? A. 217.2 g/mol B. 297.1 g/mol C. 354.5 g/mol D. 434.4 g/mol

Answer 1

Answer: The molar mass of
`BaBr_2` is 297.1 g/mol

Step-by-step explanation:

Molar mass of a compound is defined as the sum of the mass of all the atoms each multiplied its atomic masses that are present in the molecular formula of a compound. It is expressed in g/mol.

We are given a chemical compound having chemical formula
`BaBr_2`

We know that:

Molar mass of barium = 137.3 g/mol

Molar mass of bromine = 79.9 g/mol

Molar mass of
`BaBr_2=[137.3+(2* 79.9)]=297.1g/mol`

Hence, the molar mass of
`BaBr_2` is 297.1 g/mol

Answer 2

Answer : The correct option is, (B) 297.1 g/mole

Step-by-step explanation:

From the periodic table, we conclude that

The molar mass of barium (Ba) = 137.3 g/mole

The molar mass of bromine (Br) = 79.9 g/mole

Now we have to calculate the molar mass of
`BaBr_2`.

The molar mass of
`BaBr_2` = 137.3 + 2(79.9) = 297.1 g/mole

Therefore, the molar mass of
`BaBr_2` is, 297.1 g/mole