Acetone has the formula C3H6O. Which ball and stick model shown ...

[mpobi80]

Acetone has the formula C3H6O. Which ball and stick model shown above represents acetone? gray spheres = C, black spheres = O, unshaded spheres = H
 
  A) model a)
  B) model b)
  C) model c)
  D) model d)

Question 2

The half-life of carbon-11 is 20.3 minutes. How much of a 100.0 mg sample remains after 1.50 hours?
 
  A) 8.48 mg
  B) 4.63 mg
  C) 12.9 mg
  D) 22.6 mg
  E) 7.70 mg

[Missbam101]

Answer to Question 1

C

Answer to Question 2

B