A 10.00 g sample of a soluble barium salt is treated with an excess of sodium sulfate to precipitate 11.21 g BaSO4 (M- 233.4). W

Elemental zinc replaces copper

Explanation:

During this reaction, the zinc added to the copper sulfate solution has replaced the copper present in the compound.

This process is known as a single displacement reaction.

                      Zn + CuSO₄     →   ZnSO₄    +  Cu

This represents the reaction in the recycling process.

The reaction is influenced by the elements' positions within the reactivity series of metals.

• In a single displacement reaction, an element higher in the reactivity series displaces one that is lower.
• Zinc ranks above copper in this series, allowing it to react with sulfate.
• Consequently, copper is pushed out as a solid product in the solution.
• Elements positioned higher in this series exhibit greater reactivity

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Chemical reaction

Answer:

1. 192.0 g/mol.

2. 84.0 g/mol.

Explanation:

• The molar mass refers to the weight of all atoms combined in a molecule measured in grams per mole.

• To find a molecule's molar mass, we begin by looking up the atomic weights of the relevant elements from the periodic table. Next, we tally the atoms present and multiply that by their respective atomic weights.

1. Molar mass of citric acid (C₆H₈O₇):

Molar mass of C₆H₈O₇ = 6(atomic mass of C) + 8(atomic mass of H) + 7(atomic mass of O) = 6(12.0 g/mol) + 8(1.0 g/mol) + 7(16.0 g/mol) = 192.0 g/mol.

2. Molar mass of baking soda (NaHCO₃):

Molar mass of NaHCO₃ = (atomic mass of Na) + (atomic mass of H) + (atomic mass of C) + 3(atomic mass of O) = (23.0 g/mol) + (1.0 g/mol) + (12.0 g/mol) + 3(16.0 g/mol) = 84.0 g/mol.

This appears to be an essay question based on an experiment. Different oxidizing agents possess varying strengths. When compared to nitric acid (HNO3), sulfuric acid (H2SO4) serves as a weaker oxidizing agent. Therefore, using H2SO4 in place of HNO3 would not yield the same experimental results.