Assuming that the pressure remains constant, at what temperature does the purple balloon's volume reach 76.0 mL?
SOS!!!
A sealed balloon has a volume of .660 L when filled with air at 22 C at atmospheric pressure. The balloon is heated.?
2016-05-30 5:36 pm
回答 (1)
2016-05-30 5:48 pm
Initial : V₁ = 0.660 L = 660 mL, T₁ = (273 + 22) K = 295 K
Final : V₂ = 76.0 mL, T₂ = ? K
For a fixed amount of gas under constant pressure :
V₁/T₁ = V₂/T₂
Thus, T₂ = T₁ × (V₂/V₁)
The final temperature, T₂
= (295 K) × (76.0/660)
= 34 K
= -239°K
====
The question states that the balloon is heated, but now the temperature is lowered. Probably, there may be a typo and the final volume may be 760 mL instead.
If so, the final temperature, T₂
= (295 K) × (760/660)
= 340 K
= 67°C
Final : V₂ = 76.0 mL, T₂ = ? K
For a fixed amount of gas under constant pressure :
V₁/T₁ = V₂/T₂
Thus, T₂ = T₁ × (V₂/V₁)
The final temperature, T₂
= (295 K) × (76.0/660)
= 34 K
= -239°K
====
The question states that the balloon is heated, but now the temperature is lowered. Probably, there may be a typo and the final volume may be 760 mL instead.
If so, the final temperature, T₂
= (295 K) × (760/660)
= 340 K
= 67°C
收錄日期: 2021-04-18 14:54:20
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https://hk.answers.yahoo.com/question/index?qid=20160530093630AA6ch1G