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Title: Problem related to gases Post by: BiologyDuki on Oct 26, 2020 1. A bottle filled with nitrogen under a pressure of 1.5x10^7 Pa at a temperature of 27 ° C has a mass of 97 kg. Part of the nitrogen is consumed, so the pressure in the bottle, at a temperature of -3 ° C, is 6x10^6 Pa, and the weight of the bottle is 93.5 kg. How much mass of nitrogen is left in the bottle?
Solution given in the textbook: \(m_2=\frac{\triangle m\times p_2\times T_1}{p_1\times T_2-p_2\times T_1}=2.8kg\) Me: I constantly get 1.55kg. I will post the image of my work. https://ibb.co/qjNQQrn I would be glad if someone could do this and help me understand these types of problems. My first language isn't English so sorry If I did not use the right wording. Thanks in advance! Title: Re: Problem related to gases Post by: bio_man on Oct 26, 2020 When I use the formula you provide, I also get 2.8
(https://biology-forums.com/gallery/42/6_26_10_20_2_04_16.png) (https://biology-forums.com/index.php?action=gallery;sa=view&id=42151) Title: Re: Problem related to gases Post by: duddy on Oct 28, 2020 looks like they're using the ideal gas law formula, pv=nrt
@bio_man, you obtained a negative number, but it's not the same as the answer provided, could you explain? |