C)a 100ml graduated cylinder contained 25.6ml of water. a test tube full of water was emptied into the graduated cylinder. the water volume in the graduated cylinder was then found to be 45.8ml. what was the volume of water in the test tube?

20.2 mL

Explanation:

45.8 - 25.6 as 45.8 was the mass with the water from the test tube added

Answer : The volume of water in the test tube is 20.2 mL

Explanation : Given,

Volume of water in graduated cylinder = 25.6 mL

Volume of graduated cylinder = 100 mL

Volume of water after adding full test tube of water = 45.8 mL

Now we have to calculate the volume of water in the test tube.

Volume of water in the test tube = Volume of water after adding full test tube of water - Volume of water in graduated cylinder

Volume of water in the test tube = 45.8 mL - 25.6 mL

Volume of water in the test tube = 20.2 mL

Therefore, the volume of water in the test tube is 20.2 mL

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

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