Which of the following statements is incorrect:
A. A combustion reaction is a reaction where diatomic oxygen is a product
B. When the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products
C. When the combustion of a reactant that contains nitrogen occurs, diatomic nitrogen will be one of the products
D. A combustion reaction can easily be balanced by saving the oxygen’s for last
E. All are correct

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Once similarity and one difference between a mixture of elements and a mixture of compounds

What type of context clue you understand the meaning of  quandary?