3 posts • Page 1 of 1
You may have the molar masses of both elements confused with one another. Gallium's is 70 g/mol and astatine's is 210. Because astatine is three times as heavy as gallium, we only need one astatine atom per gallium atom. The scale has 9 gallium atoms, so we need a third as many astatine atoms. 9*(1/3) = 3, and so we only need 3 astatine atoms. Hope that cleared things up.
Who is online
Users browsing this forum: No registered users and 2 guests