The question does not state the chemical equation or the reactant aside from BaBr2.
The complete question should be
How many moles of KBr will be produced from 14.98 moles of BaBr2?
BaBr2 + K2SO4 → KBr + BaSO4
Answer:-
14.98 moles
Explanation:-
From the balanced chemical equation
BaBr2 + K2SO4 → KBr + BaSO4
We see
From 1 mole of BaBr2 1 mole of KBr is produced.
From 14.98 moles of BaBr2 then 1 mole x 14.98 mole / 1 mole
= 14.98 moles of KBr will be produced.
14.98 moles of KBr will be produced from 14.98 moles of BaBr2