- Given that the name of HNO 3 is nitric acid, what is the name of HNO 2?
- The molecular formula of acetic acid is C 2 H 4 O 2. What is wrong with the reaction
below in showing acetic acid dissociating in water?
C 2 H 4 O 2 → 4H+ + C 2 O 2 - - Given 40.0, 14.0. and 16.0 for the atomic masses of Ca, N, and O respectively, what
is the percent composition of Ca(NO 3 ) 2? - Given 39.1, 12.0, and 16.0 for the atomic masses of K, C, and O, respectively, what
is the percent composition of K 2 CO 3? - Using atomic masses given in Figure 2.9, what is the mass of a mole of Al 2 (CO 3 ) 3?
What is its percentage composition? - What is the mass of a mole of Al(NO 3 ) 3? How many moles of Al, N, and O are in
exactly 1 mole of this compound? - Iron, Fe forms an ionic oxide with oxygen in which each iron atom has lost 3
electrons? What is the chemical formula of this compound? - Considering the number of valence electrons in H, C, and N, write the Lewis formulas
of (A) hydrazine, N 2 H 4 , in which 2 N atoms are joined by a covalent bond and each
of the N atoms is also bonded to 2 H atoms, and of (B) HCN, in which an H atom
and an N atom are each bonded with a central C atom. - Complete the following: A mole is the quantity of material that contains ____
__.
- How many Al atoms, N, atoms, and O atoms are contained in 213 g of Al(NO 3 ) 3?
Chap. 3, Compounds: Safer Materials for a Safer World 79