Answer: Tadpole, also called polliwog, aquatic larval stage of frogs and toads. Compared with the larvae of salamanders, tadpoles have short, oval bodies, with broad tails, small mouths, and no external gills. The internal gills are concealed by a covering known as an operculum.
Explanation:
Quero pontos mesmo veu que cu descylapa moçe
D. The trend for first ionization energy
Answer:
Cu^2+ (aq) + S^2- (aq) --> CuS (s)
Explanation:
Break up all the soluble compounds into their constituent ions to get the complete ionic equation, and cross off the ones that appear the same on both sides:
Cu (aq) + 2Cl(aq) + 2Na (aq) + S (aq) --> CuS (s) + 2Na (aq) + 2Cl (aq)
2Cl and 2Na appear on both sides of the arrow, so cross those out to get the net ionic equation.