Name this compound: Pt3(PO4)4 Pt is platinum. (Hint: first determine whether Pt is a type I or type II metal)  

Which molecule has a trigonal pyramidal geometry?   (a)  CS2                  (b)  NBr3                 (c)  H2O                   (d)  CH2O

The empirical formula of a compound is CH.  If the molar mass of this compound is 78.0 g, then the molecular formula is (Note: all the numbers in the answers are subscripts)

If you have 8.36 x 1026 molecules of H2O.  How many moles of H2O do you have? A)  13.9 mole B) 1390 mole C) 5.03 x 1050 moles D) 0.000720 moles

Which of the following pair of molecules below can have hydrogen bonding? (a)  HBr  + H2O                 (b)  HF + HBr                  (c) NH3  + HF                   (d)  H2O  + CH4               

The total number of nonmetallic atoms in Mn2(C2O5)4 is  

Both gas and liquid share the following property: indefinite volume definite shape and volume   c. definite shape   d. definite shape and indefinite volume   e. no correct answer given

The following elements with the smallest electronegativity is

An example of a molecule with a nonpolar covalent bond is KBr HCl CO NF No correct answer given  

Which atom has six valence electrons?