2 Sodium metal reacts with chlorine gas according to the following balanced equation:
2Na (s) + Cl2
(g) → 2NaCl (s)

Which statement correctly explains why the formula of the product is NaCl?

A. Sodium metal and chlorine gas form a single covalent bond when they react.

B. The chlorine atom loses one valence electron and the sodium metal gains one

valence electron therefore allowing for the ratio of atoms to be 1:1.

C. The sodium metal loses one valence electron to become a 1+ cation and the

chlorine atom gains one valence electron to become a 1- anion and they

combine in a 1:1 ratio.

D. The sodium metal becomes a 2+ ion and the chlorine atom becomes a 2-

chloride ion allowing them to form an ionic bond in a 1:1 ratio.

E. In all synthesis reactions, every atom will combine in a 1:1 ra

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

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