Lab report on physical and chemical change

The mg2 + and na + ions each have ten electrons. which ion would you expect to have the smaller radius? explain your choice

To determine the ammonia concentration in a sample of lake water, three samples are prepared. In sample A, 10.0 mL of lake water is mixed with 5 mL of phenol solution and 2 mL of sodium hypochlorite solution, and diluted to 25.

State the order in which the ions associated with a

How many grams of Mg are needed to react completely with 3.80 L of a 2.50 M HF solution? Mg + 2HF yields MgF2 + H2 A. 4.75 g B. 9.50 g C. 115 g D. 190 g

A (n) (blank) material let's light pass through freely Once again this is science but I don't see science so I'm putting chemistry

What type of change is a substance that changes form but remains the same?

Which side of the mountain experiences high temperature in windward or leeward

How does light pollution affect plants and animals? Light pollution harms plants and animals because they confuse it with

In what ways are polyatomic ions like simple ions

How does oxygen obey the octet rule when reacting to form compounds? A) It gains electrons. B) It gives up electrons. C) It does not change its number of electrons. D) Oxygen does not obey the octet rule.