Which compound in this chemical equation indicates that the reaction is a precipitation reaction? 2naoh(aq) + mgcl2(aq) → 2nacl(aq) + mg(oh)2(s) a. naoh b. mgcl2 c. nacl d. mg(oh)2

The correct answer is D. Mg(OH)₂. Precipitation reactions form products of which one is a precipitate denoted as (s) in the state symbols which means that it is in solid form, while the other products and reactants remain in solution or liquid form. In this reaction there is only one solid product and that is magnesium Hydroxide.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.