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The equation in option A appears to be flawed.
The left hand side of the first equation contains eight carbon atoms whereas the right hand side contains only four. This equation is thus not properly balanced.
The nucleus of an atom contains protons and neutrons.
Protons have positive charges, neutrons have neutral charges (no charge), and electrons have negative charges. That is why when you determine net charge of atom you only look at the proton to electron ratio since the neutrons don't matter when it comes to charge.
I hope this helps. Let me know in the comments if anything is unclear.<span />
This information is correct. This is because the order of classification is domain, kingdom, phylum, class, order, family, genus, species. Since class comes before family, the two organisms could be in the same class, but then when you specify further, they could be in different families.
Answer:
4th Option
Explanation:
HNO3 is an acid, KOH is a base and they react to produce KNO3 which is a salt and H2O water.
So this reaction is a neutralisation reaction.