Answered: John and Eli do a reaction with the…

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 5.58PAE: 58 Magnesium will burn in air to form both Mg3N2 and MgO. What mass of each product would be found...

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John and Eli do a reaction with the goal to prove the law os conservation of mass. In the reaction, they place 50.00 g of acetic acid (CH₃COOH) in a clean, dry ziploc bag and then add 5.00 g of baking soda (NaHCO₃). The products of the reaction include sodium acetate, carbon dioxide, and water.

In trial 1, Eli immediately seals the bag upon addition of the baking soda and waits until the bubbling comes to a halt. John weighs the closed bag with all contents and records mass in the table. For trial 2, John and Eli repeat the procedure but forgot to seal the bag. Their results are shown in the table below.

1. Calculate the theoretical mass of the open bag.

2. Are atoms/mass conserved in each of the reactions?

3. Provide mathematical evidence to explain your reasoning that atoms/mass are/are not conserved.

Mass of Mass of
Mass of Mass of
Mass of
Temperature
Empty
Baking
Bag
Bag
Vinegar
(°C)
Bag
Soda
(Closed) (Open)
Trial 1
1.00 g 5.00 g
50.00 g 56.00 g
25.0 °C
Trial 2
1.00 g
5.00 g 50.00 g
25.0 °C

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