I believe 153.6 is the answer.
Can you upload the picture please so i can help
When iron loses the 2 4s electrons, it attains a valency of +2. Sometimes, iron will also lose one of the paired electrons from 3d orbital, leaving the entire 3d orbital filled with unpaired electrons (which provides a more stable configuration). In this case, its valency will be +3.
Answer:
x = 10/7
Explanation:
2(x + 2) - 4(2x - 3) = 4(2x - 1),
2x + 4 - 8x + 12 = 8x - 4,
-6x + 16 = 8x - 4,
20 = 14x,
x = 20/14 or 10/7
The balanced equation for the reaction is;
<span>2HNO</span>₃<span> + Ag ---> NO + 2H</span>₂O<span> + AgNO</span>₃
Stoichiometry of HNO₃ to Ag is 2:1
we need to first find the limiting reactant
number of HNO₃ moles - 12.6 g / 63 g/mol = 0.2 mol
number of Ag moles - 10.8 g / 108 g/mol = 0.1 mol
0.2 moles of HNO₃ react with 0.1 mol of Ag, this is in the 2:1 molar ratio which means that both reactants react fully in the reaction.
then molar ratio of Ag to NO is 1:1
number of Ag moles equivalent to number of NO moles
Number of NO moles - 0.1 mol
Mass of NO - 0.1 mol x 30 g/mol = 3 g
mass of NO produced is 3 g
