為什麼O(氧)有時候要用8有時候要用16？ 求解
應該是氧原子量是16，原子序是8，所以要看你的題目是什麼再決定用哪個啦...(如果你能夠直接反應H2O的分子量是18，那你就很明顯可以知道O原子量是16)
氧的原子量是8，原子序也是8， 氧氣的分子量是16
"氧"的時候用8 "氧氣"的時候用16
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![想請問這兩題的差異在哪？
為什麼右圖可以用Ksp=[Cl-][Ag+]，然後將題目給的原... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1753636/thumb_l_webp_5820D857-88BA-41BE-8D71-4CA2E6FB7193.webp?Expires=1749197484&Signature=E7Icyz2PUC9SmfYDZ3iU1EYQnJxpicCfSr~xBPBpe~iq1kNng6M8oaUmDHEu7YbCaG5C1SObK0ImM5Jx-bAkgW5VC65sdQtoi~nDp7RIY6zF5Kx8QUlFz6j08-f3hE3x0-oayzHbdLdogpu-LLI84Y-ex2KGzvvmdEMODCVW5r0gZyRVeMW0yByByYVtAz1EW4vtgHs8JjOOEDByd8VuYM1vpl0miP2pjg9QkPzCfZwQZe-jNiv35OfdXdwAdGd0pNgM-mEbXybAckpTb3DbeuGSLknEdXIbWzH4eYoin7oWleeTJXl5Hi-XhhhaEvxMRPFKYHDvew52UUNGXGGCyQ__&Key-Pair-Id=K2W722D70GJS8W&Expires=1749197484&Signature=q2YW7IzRPNeDPz9M7A~FuieqEdkJ9wmRf28r-bRfTafH3nBXCOoKMrDOpbV5uWm-HWIDNHEUxFLD-PsOityJhnEmvx11jHuYlD~IwawWLAOI4KEwdyq527OXWUWm5cwcRMnY3pYaqgpvVVENJ-TDNVmOGKTRzl89mfBE~erAsY5E~yIPA3TCmafC0jZ3tnMPMc44nokjk3dGNSoPOlT4EXrKzkr6GGXFOAK00oVvKEQXu6~AhijjKKoKswF73JyTeSo8dUiqkGXgMfTxhVR5tKWODdBJMjXzH-~3jGCsCcVLwG4XMO3dkXOD9IHVMCQbWftoewz7aKok6~BlAA4YBw__&Key-Pair-Id=K2W722D70GJS8W)
![想請問這兩題的差異在哪？
為什麼右圖可以用Ksp=[Cl-][Ag+]，然後將題目給的原... - 2](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1753637/thumb_l_webp_8DD99B7A-BB8A-4E22-A2E7-A7D50F6112D8.webp?Expires=1749197484&Signature=ZVc1CbtKU65kSndFBK0sOPQzff2MA75yo2ExXZOEoMRXUSf9bk3UBGDG-wEnJD-~y0qQ5-rkJMZ0DFuVGJD8igxoQbWSpDbGnO~Of2mGR0~yT3ACiZ9O-eH3VTc9YfzHqgf7ZLmfuXqvwJqPOOsfnfqj6ka7KuktNFC~GAevL8~jGdIoBNUccpEQqtOdkyzH1lxdufMGuEflQWVvKr7~gdWVr0QUdu9t2PinPXEQ-fQp5jmxJ2w07SsW-4dj3NdY~qvNJAQhpThO9yYzxuoUu3E9N-RTF41NbLX2YCqYJ8OwyZ8dmOmBYMt8~NhM9eJawE5aekcvN8IxWHQJMzcmCQ__&Key-Pair-Id=K2W722D70GJS8W&Expires=1749197484&Signature=XpnwQjzSo4za44JmRNOe0U043asfoxwrFA53lT-mmWaByFva8p7KbIcy2nec7qrMzbBdebiUvBs-8I4fBrcyiNBITawZueoH6hrSWJ-uhxctxVJ5Gf2xCB4lUNAo91lZQm6gQRyDtNZ9MbkosgOQ3kmlSHCVz2CWhz009tFiE-cJpKCiirZNfJtGPSinF~jGMLoAYBmAV2juO3jIE2M7aeXklSogmysJTAESsZAzgJJi-D3~kk~yY2jQZO8G9kWlmOw4K528NV2-VGgiM83zEPe3sdAIBa6Bbcqczuh6vMYhy05bHZLUYxlBQk09jA8RH9ltHUeuYRWUlHUeZ-qkmA__&Key-Pair-Id=K2W722D70GJS8W)
"氧"的時候用8
"氧氣"的時候用16