1) RighT side of the equation: PbCl₂(s)+2NaNO₃(aq) </span><span />
<span>2) The coefficients and subscripts tells the number of atoms in each chemical formula by this convention: </span><span />
<span>i) The coefficient before the compound (chemical formula) applies to all the elements to the right (in the very chemical formula).
</span><span>ii) The subscripts to the right of the element apply only to the element to which it is subscripted.</span> <span /><span> ii) If there are parenthesis the subscrpts apply to all the elements inside the parenthesis. </span><span />
<span>3) With that, let's see each compound (chemical formula): </span><span />
<span>i) Pb Cl₂ (s): there are two kind of atoms, Pb and Cl. </span><span />
<span>Pb does not have any subscriPT, which is interpreted as subscript 1, so that is 1 atom of Pb. </span><span />
<span>Cl₂ means 2 atoms of chlorine </span><span />
<span>ii) 2NaNO₃: </span><span />
<span>Na: 2 atoms (because the coefficient)
N: 2 atoms (because the coefficient)
</span><span>O: 6 atoms ( 2 x 3) </span><span> </span>
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