A 75.0 L steel tank at 20.0C contains acetylene gas, C2H2, at a ...

[jon_i]

A 75.0 L steel tank at 20.0C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
 
  A) 4.33 g
  B) 6.01 g
  C) 113 g
  D) 1650 g

Question 2

The coordination number and oxidation number of the central atom in Mn(CO)4Br2 are ________ and ________, respectively.
 
  A) 4, +1
  B) 6, +1
  C) 5, +2
  D) 4, +2
  E) 6, +2

Question 3

When a hypothesis is confirmed by many scientists, it may become a
 
  A. law.
  B. theory.
  C. procedure.
  D. result.

[livaneabi]

Answer to Question 1

C

Answer to Question 2

E

Answer to Question 3

B

[jon_i]

Thank you!

[livaneabi]

Always glad to help...