The mixing of barium chloride and sodium sulfate is a precipitate reaction. This reaction generates barium sulfide and sodium chloride. Which best describes this reaction? Barium chloride and sodium sulfate are solids, and barium sulfide or sodium chloride must be a liquid. All of the materials are liquids. All of the materials are solids. Barium chloride and sodium sulfate are liquids, and barium sulfide or sodium chloride must be a solid.

Barium chloride and sodium sulfate are liquids, and barium sulfide or sodium chloride must be a solid.

Explanation:

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally