NaOH is one molecule (sodium hydroxide). The coefficient (20) is telling you that there are 20 molecules of NaOH. Sodium hydroxide is composed of one sodium atom (Na), one oxygen atom (O), and one hydrogen (H) atom. If one molecule has three atoms, then 20 molecules will have 60 atoms total.
Note that there are symbols of two different atoms present and that neither has an explicit subscript. This means that there are two atoms in a formula unit of NaCl.
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i am not sure that's why i came to answers.com.
The number of protons in the nucleus of the atom determine its identity.
the number of valence electrons determine the reactivity of the atoms
Determine the atomic number(s) of all the element(s) in the ion, then multiply these atomic numbers by the number of atoms of the corresponding element in the formula of the ion, and add the resulting products to obtain the number of protons in an ion.
If you mean "how does one determine an atoms atomic mass?", then the answer would be to find a periodic table of elements where the whole numbers indicate atomic number and the other indicating atomic mass. Atomic number is generally described as the number of protons in a naturally occurring atom of a given element, and the atomic mass is the number of protons + number of neutrons in an atom.
By the number of protons it has.
It is necessary to balance the number of atoms for reactantas and products.
try counting
i am not sure that's why i came to answers.com.
The number of protons in the nucleus of the atom determine its identity.
Do you mean number of protons in a nucleus? The nucleus is part of an atom.
The number of protons in the nucleus of the atom determine its identity.
3.29 moles Zn x 6.02x10^23 atoms/mole = answer (do the math)
chan counts the number of protons
Number of protons.
The number of basic particles - atoms of molecules - of a compound in one mole of the substance.
Electrons. The number of valence or "free" electrons an atom has determines how it can bond with other atoms.