Answer to Question #283136 in Physics for Kimgcash

Question

A glass volumetric flask holds exactly 250.00mℓ at 20.0◦C. (a) What volume would the flask hold at 50.0◦C? (b) Suppose the flask is filled with water at 50.0◦C. If the volume of the water had been 250.00mℓ at 20.0◦C, what volume would the water have at 50.0◦C? (c) Suppose instead that the flask is empty (which really means that it’s full of air). If the air inside is heated from 20.0◦C to 50.0◦C, what would the new volume of the air be?

Answer 1

(a) The flask will expand, decreasing the inner volume. Assuming the outer space the flask takes remains the same, the volume inside the flask will be

$$V_i=V_1(1-\gamma\Delta t)=249.80\text{ ml}.$$

(b) The volume of the water inside will decrease, it will be 249.8 ml.

(c) The volume inside the flask under the conditions stated in (a) will shrink, or become 249.8 ml.