Bot GPT 4-o mini It seems you’re discussing the conservation of mass in the context of a chemical reaction. Let's break down the information you provided.
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Chemical Reaction: The balance reaction you've presented is: \[ \text{Zn} + 2\text{HCl} \rightarrow \text{H}_2 + \text{ZnCl}_2 \]
In this reaction:
- Reactants: 1 Zn, 2 H, 2 Cl
- Products: 1 H, 1 Zn, 2 Cl
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Conservation of Mass: The statement "the total number of atoms does not change so mass is conserved in the reaction" is correct. In a balanced chemical equation, the number of atoms for each element on the reactant side (left) is equal to the number of atoms for each element on the product side (right). Therefore, the mass is conserved.
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Atomic Mass Units (AMU):
- Zinc (Zn) has an atomic mass of approximately 65.38 AMU.
- Hydrogen (H) has an atomic mass of approximately 1.01 AMU.
- Chlorine (Cl) has an atomic mass of approximately 35.45 AMU.
Now, let's calculate the total mass of the reactants and products:
Reactants:
- Zn: 1 x 65.38 AMU = 65.38 AMU
- HCl: 2 x (1.01 + 35.45) = 2 x 36.46 AMU = 72.92 AMU
- Total mass of reactants = 65.38 + 72.92 = 138.30 AMU
Products:
- H₂: 2 x 1.01 AMU = 2.02 AMU
- ZnCl₂: 1 x 65.38 + 2 x 35.45 = 65.38 + 70.90 = 136.28 AMU
- Total mass of products = 2.02 + 136.28 = 138.30 AMU
Conclusion:
The total mass of both sides is approximately equal, confirming the conservation of mass in this chemical reaction. Your mention of "215 AMU" and "76 AMU" does not correspond with the calculations based on atomic masses. If you meant something else or if further clarification is needed, feel free to ask!
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