What pressure will 2.6 1023 molecules of H2 exert in a 3.9 L ...

[RODY.ELKHALIL]

What pressure will 2.6  1023 molecules of H2 exert in a 3.9 L container at 45C?
 
  A) 5.7 atm
  B) 1.7 atm
  C) 2.9 atm
  D) 3.4 atm
  E) 4.6 atm

Question 2

What answer should be reported, with the correct number of significant figures, for the following calculation? (965.43  3.911 ) + 9413.4136
 
  A) 13189
  B) 13189.2
  C) 1.32  104
  D) 1.3  104
  E) 1.319  104

Question 3

Gallium has an atomic mass of 69.723 amu. The Ga-69 isotope (68.926 amu) is 60.11. What is the amu of the other isotope?
 
  A) 70.924 amu
  B) 70.928 amu
  C) 70.932 amu
  D) 70.920 amu

[janeli]

Answer to Question 1

C

Answer to Question 2

E

Answer to Question 3

A

[RODY.ELKHALIL]

Excellent

[raili21]

Wow, this really help