Oxygen has a boiling point of -183'C and a melting point of -218'C . Which of hte following is /are correct ?
1 ) oxygen is a gas at -200'C
2 ) oxygen is a solid at -220'C
3 ) oxygen is a liquid at -180'C
PHY一問
2006-12-26 9:58 pm
回答 (2)
2006-12-26 10:26 pm
✔ 最佳答案
2 ) oxygen is a solid at -220'C 3 ) oxygen is a liquid at -180'C
2006-12-30 3:04 am
2 ) oxygen is a solid at -220'C
boiling point 係 -183'C
melting point 係 -218'C
即係
T < -218'C, 就係solid
-218'C < T < -183'C , 就係liquid
T > -183'C , 就係gas
所以只有 2 ) oxygen is a solid at -220'C 是對的
boiling point 係 -183'C
melting point 係 -218'C
即係
T < -218'C, 就係solid
-218'C < T < -183'C , 就係liquid
T > -183'C , 就係gas
所以只有 2 ) oxygen is a solid at -220'C 是對的
參考: ME
收錄日期: 2021-04-13 15:15:16
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