Chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.
Politely send of a reminder email titled following up on letter for recommendation.
It is saying to give the definition of the word ambiguous, if that didnt help then you need to ask more clearer.
Answer:
1. Raising your hand and adding a comment to the discussion
2. Asking a question about the subject
