1. Complete the following analogy: A chemical symbol is to an element as a chemical formula is to a(n)
2. The compound sodium sulfide consists of a ratio of two sodium ions (Na) to one sulfide
ion (S2). Write the chemical formula for this compound.
3. A molecule of sulfur dioxide consists of one sulfur atom (S) and two oxygen atoms (O).
What is the chemical formula for this compound?
4. Identify the ratio of atoms in the compound represented by the following chemical
formula: N205

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Identify the lewis acid in this balanced equation: ag+ + 2nh3 -> ag(nh3)2+a. ag+b. nh3c. ag(nh3)2+

Which of the following is true about the speed of light? it depends on the wavelength.