markaylarowland8

13.10.2020 • 

Chemistry

Plzz write a small pharghraph Question:

A 250mL Erlenmeyer flask weighing 55g contains 5g of sodium bicarbonate. To this, an excess, 15g, of acetic acid is added to the flask. While swirling, many bubbles are present. Finally, you stop swirling the flask, and the bubbles stop. You then place this flask on an analytical balance. The mass registers 73g.

How does this final mass compare with the value expected according to the Law of Conservation of mass?

Why do you believe that this comparison exists?

State the Law of Conservation of Mass. Do these results break this law? Why?

What changes, if any, could be made to the procedures in this experiment to allow a closer comparison to what the Law of Conservation would expect?

Ответ:

jadenayngel1377

04.02.2022

Chemistry

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You should download Socratic it’s a real good app for answers !

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Ответ:

VictoriaRose520

04.02.2022

Chemistry

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At first glance, the final mass does not follow the Law of Conservation of Mass because, according to the law, the final mass should be 75g. This comparison likely occurred because stirring the flask created bubbles, suggesting that one product of the reaction is a gas. The Law of Conservation of Mass states that the mass of the reactants must equal the mass of the products. One product happened to be gas that escaped through the opening of the flask, meaning that the results were not completely accurate and do not break the law. One change to make to the experiment would be to seal the flask closed after adding both reactants to ensure that gas doesn’t escape.

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Ответ:

ello17

14.12.2020

Chemistry

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C

Explanation:

he never had evidence in the first place that was nearly enough.

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