Phenolphthalein has often been used to monitor the progress of ...

[809779]

Phenolphthalein has often been used to monitor the progress of acid-base neutralization reactions. What color will phenolphthalein be if there is an excess of base present?
 
  A) colorless
  B) green
  C) pink
  D) yellow

Question 2

What is the mass defect of the lithium-9 isotope in g/mol? Lithium-9 has an atomic mass of 9.0273 g/mol.
 
  What will be an ideal response?

[Leostella20]

Answer to Question 1

C

Answer to Question 2

0.0485 g/mol

[809779]

TYSM

[Jossy]

Thanks for the timely response, appreciate it