How many photons are contained in a burst of yellow light (589 ...

[cookcarl]

How many photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy?
 
  A) 3.37  1019 photons
  B) 3.06  1030 photons
  C) 1.80  1024 photons
  D) 4.03  1028 photons
  E) 2.48  1025 photons

Question 2

The reactant in an enzyme-catalyzed reaction is called the
 
  A) hormone.
  B) substrate.
  C) cofactor.
  D) inhibitor.
  E) vitamin.

[diesoon]

Answer to Question 1

C

Answer to Question 2

B

[cookcarl]

TYSM

[milbourne11]

Excellent