Question

Read the given passage and choose the right answers

A student mixed 5.3 g of sodium carbonate and 6.0 g of ethanoic acid in a conical flask.
After experiment, he weighed the flask again. The weight of the residue in the flask was
only 9.1 g. He approached the teacher who guided him to carry the experiment in a closed
flask with a cork. There was no difference in weight of the flask before and after the

experiment.

a. What was the mistake committed by the student?

b. Name the law, used in this experiment.

c. What would be the weight of CO2, which escaped out?

d. Why after closing the flask, there was no difference in weight of the flask?



​

Answer 1

Here is your answer

Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.