What is the equilibrium expression for the reaction below? 2Na(s) +0 (9)
Na 0,(s)
[Na]
A.
[Na,02]
B.
Na][0,
Na,02]
c.
1
[0]
[Na,02]
[Na] [02]
D.

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent

The minerals found in bones are deposited by living cells called

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.