Element X reacts with chlorine to form a compound with the ...

[joe]

Element X reacts with chlorine to form a compound with the formula XCl2. The oxide of element X is basic. Element X is ________.
 
  A) Rb
  B) Ca
  C) Al
  D) P
  E) H

Question 2

The elementary reaction 2NO2 (g)  2NO (g) + O2 (g)
 
  is second order in NO2 and the rate constant at 660 K is 5.23 M-1s-1. The reaction half-life at this temperature when NO20 = 0.45 M is ________ s.
  A) 2.4
  B) 7.6
  C) 0.19
  D) 0.13
  E) 0.42

Question 3

The predominant intermolecular force in CaBr2 is ________.
 
  A) London-dispersion forces
  B) ion-dipole forces
  C) ionic bonding
  D) dipole-dipole forces
  E) hydrogen bonding

[hramirez205]

Answer to Question 1

B

Answer to Question 2

E

Answer to Question 3

C

[joe]

Thanks

[hramirez205]

Welcome