Answer: is the benefit worth the cost?
Explanation: for those on edge :)
Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colourless, acidic and highly corrosive. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon).
Answer: 116g/mole
Explanation:
She didn't get the answer because she didn't add the them well , due to the bracket present.