(Solved): 4. Add the sulfuric acid (H2SO4) solution dropwise to the flask. Swirl the solution and note ...

4. Add the sulfuric acid $\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$ solution dropwise to the flask. Swirl the solution and note any evidence of a reaction. Continue to swirl until all evidence of a reaction has stopped. Again measure and record the total mass. Continue swirling and weighing the solution every thirty seconds until two consecutive weighings differ by less than $0.010\mathrm{g}$. We will consider this to be constant mass meaning that the mixture has lost as much gas as it can (not necessarily all that it contains). Observations: Indicate what you observe when you perform these steps. Addition of ealcium chloride to sodium carbonate Addition of sulfuric acid to flask "Include measurements until the difference between two consecutive measurements is withm v.viv $\mathrm{g}$. Use the lowest mass in step 3 in your calculations. Calculations and results Mass loss due to first mixing (1-2) Mass loss due to second mixing $(2-3{)}^{\ast \ast }$ Use the lowest mass measured for step 3. Compare the two values for mass loss from the calculations above. 1. Why do you think that the mass loss from the second mixing is different from the mass loss from the first mixing? 2. For the mass loss from the first mixing a value of less than 0.01 grams can be considered negligible, meaning it might be due to experimental error. Does the mass difference verify the law of conservation of mass? Explain. 3. Does the mass loss for the second mixing confirm the Law of Mass Conservation? If not, what happened?