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: Option (B) is the correct answer.

Explanation:

Molar mass is defined as the sum of masses of all the atoms present in a compound.

For example, atomic mass of barium is 137.32 g/mol and atomic mass of bromine is 79.90 g/mol.

Therefore, molar mass of $BaBr_{2}$ will be as follows.

                 Molar mass = atomic mass of Ba + $2 \times atomic mass of Br$

                                      = 137.32 g/mol + $2 \times 79.90 g/mol$

                                      = 297.12 g/mol

Hence, we can conclude that molar mass of [tex]BaBr_{2}[tex] is 297.12 g/mol.

Answer 2

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

Explanation :

Molar mass : It 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.

As we know that,

Molar mass of Ba = 137.3 g/mole

Molar mass of Br = 79.9 g/mole

Now we have to calculate the molar mass of $BaBr_2$

Molar mass of $BaBr_2$ = $1(137.3)+2(79.9)=297.1g/mole$

Therefore, the molar mass of $BaBr_2$ is 297.1 g/mol