💧 تفاوت دانسیته H2O و D2O اولی آب معمولی است که هیدروژن آن یک پروتون دارد دومی آب سنگین است که ایزوتوپ هیدروژن آن یک نوترون اضافه دارد (جرم ها یکسان است)
💧 تفاوت دانسیته H2O و D2O اولی آب معمولی است که هیدروژن آن یک پروتون دارد دومی آب سنگین است که ایزوتوپ هیدروژن آن یک نوترون اضافه دارد (جرم ها یکسان است)
5Telegram Channel avatar size/dimensions Private channels are only accessible to subscribers and don’t appear in public searches. To join a private channel, you need to receive a link from the owner (administrator). A private channel is an excellent solution for companies and teams. You can also use this type of channel to write down personal notes, reflections, etc. By the way, you can make your private channel public at any moment. Today, we will address Telegram channels and how to use them for maximum benefit. The SUCK Channel on Telegram, with a message saying some content has been removed by the police. Photo: Telegram screenshot. A vandalised bank during the 2019 protest. File photo: May James/HKFP.
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