Answer the following statements about the polarity of the bonds:  The hydrogen carbon bond is [P1] The nitrogen oxygen bond is [P2] The bond  between nitrogens in N2 is [P3]

For each pair of atoms or ions, use the drop-down menu to select the larger radius of the two. 1.  K or Rb [1] 2.  Ca or Ga [2] 3.  Cl or Cl– [3] 4,  K+ or K [4]

What is the electron and molecular geometry of KrBr4?

Use the drop-down menu to identify the electron geometry for each of the molecules listed below. Both carbons in C2H4 have [1] electron geometry SeBr4 has [2] electron geometry NCl3 has [3] electron geometry

Which of the following molecules has a central atom with an expanded octet? 

For each pair of atoms or ions, use the drop-down menu to select the larger radius of the two. 1.  K or Rb [1] 2.  Ca or Ga [2] 3.  Cl or Cl– [3] 4,  K+ or K [4]

For each pair of atoms or ions, use the drop-down menu to select the larger radius of the two. Sr or Mg [1] Ca or Ga [2] Br– or Br [3] Rb+ or Rb [4]

A chunk of hot metal is plunged into 260.0 g of water at an initial temperature of 34.6°C.  The metal releases 3120 J of heat energy into the water.  Calculate the final temperature of the water.

Determine if the following are endothermic or exothermic:  Forming nitrogen and oxygen bonds in NO2 [1] Breaking the carbon and hydrogen bonds in ethane [2] Boiling benzene is [3]

What is the hybridization of the oxygen atom in the following molecule: