Original post by ra1500
Where did they get the x40 from??? For mass of naOH
Attachment not found
Attachment not found
Where did they get the x40 from??? For mass of naOH
Your attachments didn't work for me, but 40 is the molecular mass of NaOH
sodium= 23
oxygen=16
hydrogen=1
so the mass of NaOH is 40 atomic mass units
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