The relative mass of carbon is 3/8 that of an oxygen molecule. ...

[nautica902]

The relative mass of carbon is 3/8 that of an oxygen molecule. How many grams of carbon are needed to have the same number of particles as found in 32 grams of oxygen molecules?
 
  A) 12 g
  B) 32 g
  C) 3 g
  D) 8 g
  E) 3/8 g

Question 2

Which of the following forms of nitrogen is most readily accessible to plants?
 
  A) NO3-
  B) NH4+
  C) N2
  D) N2O
  E) A and B

Question 3

What is the main structural feature that distinguishes lipids from other biomolecules?
 
  A) Lipids contain a large number of nonpolar, hydrophobic functional groups.
  B) Lipids form coiled structures with extensive amounts of branching.
  C) Lipids contain a large number of hydrogen bonding functional groups.
  D) Lipids form rigid, linear arrays of polymeric molecules that cannot be easily dissolved.
  E) none of the above

[blfontai]

Answer to Question 1

A

Answer to Question 2

E

Answer to Question 3

A

[nautica902]

Wow, this really help

[Mochi]

Gracias!