Answer: The missing coefficient is 2.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

As in the products, there are 2 atoms of sodium, thus there will be 2 atoms of of sodium in the reactant as well. This will balance the number of hydrogen and oxygen atoms as well.
Thus the missing coefficient is 2.
Answer:
<em>Quantisation</em><em> </em><em>is</em><em> </em><em>total</em><em> </em><em>charge</em><em> </em><em>by</em><em> </em><em>number</em><em> </em><em>of</em><em> </em><em>electrons</em><em>.</em><em> </em>
<em>q</em><em>=</em><em>ne</em>
<em>here</em><em> </em><em>q</em><em> </em><em>is</em><em> </em><em>quantisation</em>
<em>n</em><em> </em><em>is</em><em> </em><em>number</em><em> </em><em>of</em><em> </em><em>electrons</em>
<em>e</em><em> </em><em>is</em><em> </em><em>standard</em><em> </em><em>charge</em><em> </em><em>that</em><em> </em><em>is</em>
<em>e</em><em>=</em><em> </em><em>1.6 × 10</em><em>p</em><em>o</em><em>w</em><em>e</em><em>r</em><em>-</em><em>1</em><em>9</em><em>C</em>
Explanation:
<h2>HOPE IT WILL HELP YOU✌✌✌✌✌</h2>
The neutron is electrically neutral.
Molar mass of nitric acid (HNO3) =atomic mass of hydrogen + atomic mass of nitrogen +3x atomic mass of oxygen . The molar mass of nitric acid (HNO3) is 63.0144 gram per mole, but you have 3.4 moles. Therefore; the answer is 63.0144 g/mole x 3.4 moles = 214.24896 grams.
Answer:
I guess the answer is D point