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Questions and Answers
How is the density of air determined using a round-bottomed flask?
How is the density of air determined using a round-bottomed flask?
- By exposing the flask to different gases and observing the reaction
- By shaking the flask and measuring the change in pressure
- By heating the flask and measuring the expansion of the air inside
- By attaching the flask to a vacuum pump and measuring the change in mass and volume of air removed (correct)
What is the purpose of opening the clip of the round-bottomed flask underwater?
What is the purpose of opening the clip of the round-bottomed flask underwater?
- To measure the change in pressure inside the flask
- To prevent any further reaction with the air inside the flask
- To observe the expansion of air inside the flask
- To allow water to replace the vacuum in the flask (correct)
What is the role of the sensitive top-pan balance in determining the density of air?
What is the role of the sensitive top-pan balance in determining the density of air?
- To analyze the chemical composition of air inside the flask
- To heat the air inside the flask and measure its expansion
- To test the purity of air inside the flask
- To measure the mass of the round-bottomed flask with and without air (correct)
Why is a round-bottomed flask used in determining the density of air?
Why is a round-bottomed flask used in determining the density of air?
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