1 mol of silver means 6.02 x 10²³ Ag atoms
number of moles of silver
= 2.408 × 10²⁴ Ag atoms x <u> 1 mol Ag </u>
6.02 x 10²³ Ag atoms
= 0.4 x 10
<u>= 4 moles</u> Ag
<u>4 moles of silver</u> are equivalent to 2.408 × 10²⁴ atoms
HNO₃(aq) +Ca(OH)₂(aq) --> H₂O(l) + Ca(NO₃)₂(aq)
It is Ca(NO₃)₂ because NO₃ has a charge of -1, and Ca has a charge of 2+. And when writing an ionic compound, you take the charge of 1 and write it as the subscript of the other.
Now let's balance the equation and then find the net ionic equation.
2HNO₃(aq) +Ca(OH)₂(aq) --> 2H₂O(l) + Ca(NO₃)₂(aq)
2H⁺(aq) + 2NO₃⁻(aq) + Ca²⁺(aq) + 2OH⁻(aq) --> 2H₂O(l) + Ca²⁺(aq) + 2NO₃⁻(aq)
We can get rid of the spectator ions. These are the ions that are on both sides.
We are left with
2H⁺(aq) + 2OH⁻(aq) --> 2H₂O(l)
We can simplify the net ionic equation down to
H⁺(aq) + OH⁻(aq) --> H₂O(l)
A) a resistor, which converts some electric energy to thermal energy.
The electron configuration of Nitrogen is
1s ^2 2s ^2 2p^ 3
There are 3 electrons in the 2p sub level of nitrogen.
