Yahoo Answers: Answers and Comments for I need help with this problem? [Chemistry]
Copyright © Yahoo! Inc. All rights reserved.
https://answers.yahoo.com/question/index?qid=20190615192113AAKOBJp
From Anonymous
enUS
Sat, 15 Jun 2019 19:21:13 +0000
3
Yahoo Answers: Answers and Comments for I need help with this problem? [Chemistry]
292
38
https://answers.yahoo.com/question/index?qid=20190615192113AAKOBJp
https://s.yimg.com/zz/combo?images/emaillogous.png

From pisgahchemist: Combined gas law .....
P1V1 / T1 = P2V2 / T2 ...
https://answers.yahoo.com/question/index?qid=20190615192113AAKOBJp
https://answers.yahoo.com/question/index?qid=20190615192113AAKOBJp
Sat, 15 Jun 2019 19:26:01 +0000
Combined gas law .....
P1V1 / T1 = P2V2 / T2 ....... combined gas law
V2 = P1V1T2 / (T1P2) ........ solve for V2
V2 = 380 torr x 750L x 228K / 353K / (0.20 atm x 760 torr / 1 atm)
V2 = 1211 L ............ must be rounded to two significant digits: 1200L
========= Follow up ==========
When you write 8oC it looks remarkably like eighty Celsius, but it's eight Celsius... You would do well to not include the letter "o" when you mean degrees. Just write it as 8C, or actually put the "degree" symbol: 8°C.
P1V1 / T1 = P2V2 / T2 ....... combined gas law
V2 = P1V1T2 / (T1P2) ........ solve for V2
V2 = 380 torr x 750L x 228K / 281K / (0.20 atm x 760 torr / 1 atm)
V2 = 1521 L ............ must be rounded to two significant digits: 1500L
The data is given to two significant digits, but your answer choices are given to three significant digits. That's a problem. The choices should be given to two significant digits, which makes the answer 1500L, not 1520L.