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The image shows a screen displaying a chemistry question about the law of conservation of mass, as well as a periodic table of elements. Let's address the two questions visible on the screen:

1. **Question 1: Which statement supports the conservation of mass in this reaction?**

   The chemical reaction is given as:

   \[
   2\text{NaCl}(s) + \text{H}_2\text{SO}_4(aq) \rightarrow 2\text{HCl}(g) + \text{Na}_2\text{SO}_4(aq)
   \]

   **Analysis**:
   - Count the atoms for each element on both sides of the reaction.
     - Reactants:
       - Na: \(2\)
       - Cl: \(2\)
       - H: \(2\)
       - S: \(1\)
       - O: \(4\)
     - Products:
       - Na: \(2\)
       - Cl: \(2\)
       - H: \(2\)
       - S: \(1\)
       - O: \(4\)

   Since all elements have equal numbers of atoms on both sides, the reaction follows the law of conservation of mass.

   **Answer**: Option **A**: There are equal numbers of sodium atoms in the products and in the reactants.

2. **Question 2: A scientist combines 17 grams of NaCl with 12 grams of H₂SO₄. What will be the total mass of the products?**

   According to the law of conservation of mass, the total mass of the reactants is equal to the total mass of the products.

   - Total mass of reactants = \(17 + 12 = 29\) grams.

   **Answer**: The total mass of the products will be **29 grams**.

If you have any questions or want to go through the details, feel free to ask!

### Related Questions:
1. How does the law of conservation of mass apply to chemical reactions in closed systems?
2. What is the significance of balancing chemical equations?
3. Can the mass of individual elements change during a chemical reaction?
4. How do you determine the limiting reactant in a chemical reaction?
5. What would happen if there is a discrepancy in mass in a chemical reaction?

### Tip:
Always ensure that the number of atoms for each element is balanced on both sides of the equation to confirm the conservation of mass.

Which statement supports the conservation of mass in this reaction? A scientist combines 17 grams of NaCl with 12 grams of H₂SO₄. What will be the total mass of the products?

Understand how the law of conservation of mass applies to chemical reactions with a detailed look at the combination of NaCl and H₂SO₄. This example highlights the importance of balancing chemical equations. Suitable for Grade 8 science students.

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