Jump to content
Science Forums

Leaderboard

Popular Content

Showing content with the highest reputation on 10/28/2020 in all areas

  1. Hazel, you have got this a bit garbled. The formula for table salt is NaCl. The atomic mass of Na is 23. For Cl it is 35.5 (it is not a whole number due to the mixture of isotopes that Cl consists of in nature.) So the molecular weight of NaCl is 23+35.5=58.5, which means it consists of about 40% Na and about 60% Cl. The other chemicals you mention are probably additives, present in small amounts, to stop it clogging in humid conditions and for your health (iodide is added to prevent iodine deficiency for instance see goitre). The fineness of the crystals is a matter of choice in the superma
    1 point
  2. You can often write a simple algebraic equation in words. For example Newton's F=ma is "Force equals mass times acceleration. But is that really any clearer to you than F=ma? It seems to me that, as we are all taught nowadays in school enough maths to be able to understand F=ma, it is not unreasonable to expect that readers can deal with it. But more complicated things will lose readers, inevitably.
    1 point
×
×
  • Create New...