Classify each chemical reaction: Reaction
Type
0,(g) + CuBr2(aq) – CuCl, (aq) + Bry()
choose one
Fe(s) + CuSO4 (aq)
Feso, (aq) + Cu(s)
choose one
>
2G113(aq) + 3Pb(NO3), (aq) -- 20(N0), (aq) + 3Pb13 (3)
choose one
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According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature