2.a sample of gas in a syringe has a volume of 9.66ml at a pressure of 64.4kpa. the plunger is depressed until the pressure is 94.6kpa. what is the new volume, assuming constant temperature?

6.57 mL.

Explanation:

P₁ = 64.4 kPa, V₁ = 9.66 mL.

P₂ = 94.6 kPa, V₂ = ??? mL.

∴ V₂ = (P₁V₁)/(P₂) = (64.4 kPa)(9.66 mL) / (94.6 kPa) = 6.57 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.