The formula equation that shows a reversible reaction is
NH4Cl (s) ⇔ NH3 (g) + HCl (g) ( answer C)
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<em> </em><u><em> Explanation</em></u>
- Reversible reaction is a chemical reaction where the reactants form products , where in turn react together to form reactant back.
- The reaction of NH4Cl (s)⇔ NH3(g) + HCl (g) is a reversible reaction since NH4Cl decompose to form NH3 and HCl which in turn react together to form NH4Cl back .
When preparing diluted solutions from concentrated solutions , we can use the following equation;
c1v1 =c2v2
Where c1 and v1 are the concentration and volume of the concentrated solution
c2 is the concentration of the diluted solution to be prepared
v2 is the volume of the diluted solution
Substituting the values;
12.0 M x v1 = 0.339 M x 100 mL
v1 = 2.825 mL needs to be taken from the stock solution
the mass of 1 mole of phosphorus atoms is approximately 30
g
hope this helps :)
The body gets rid of acid in a chemical pathway that requires oxygen. The correct answer is B, oxygen.
