Interpret the following balanced chemical equations in terms...

Interpret the following balanced chemical equations in terms of particles, moles, and mass. Show that the law of conservation of mass is observed. \begin{equation} \begin{array}{l}{\text { a. } \mathrm{N}_{2}(\mathrm{g})+3 \mathrm{H}_{2}(\mathrm{g}) \rightarrow 2 \mathrm{NH}_{3}(\mathrm{g})} \\ {\text { b. } \mathrm{HCl}(\mathrm{aq})+\mathrm{KOH}(\mathrm{aq}) \rightarrow \mathrm{KCl}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l})} \\ {\text { c. } 2 \mathrm{Mg}(\mathrm{s})+\mathrm{O}_{2}(\mathrm{g}) \rightarrow 2 \mathrm{MgO}(\mathrm{s})}\end{array} \end{equation}

Transcript

00:01 Hello everyone, today we are going to interpret the following balanced chemical equations in terms of particles, moles and mass.

00:10 We are also going to define the law of conservation of mass is observed here.

00:15 So first of all we have an equation e that is nitrogen gas reacted with hydrogen gas and resulted in the production of ammonia gas.

00:37 Now this equation represents the reaction between nitrogen and hydrogen.

00:44 It produces ammonia.

00:46 According to this equation, one mole of nitrogen reacted with three moles of hydrogen and resulted in the production of two moles of ammonia.

01:02 The balanced equation shows that the number of atoms of each element is conserved.

01:09 Here we had two atoms of nitrogen in the products.

01:13 We also have two nitrogen atoms.

01:14 The hydrogen atoms we had three cross two that is six hydrogen atoms and here in the products also we have three cross two that is six hydrogen atoms.

01:33 So the law of conservation of mass is observed here.

01:37 In terms of moles, so it is seen that one mole of nitrogen reacts with three moles of hydrogen and results in the production of two moles of ammonia.

02:00 In terms of mass, the equation states that 28 gram of nitrogen reacts with six gram of hydrogen.

02:15 So the mass of reactants here is 34 grams.

02:21 While in case of products, the ammonia one molecule of ammonia has the mass of about 17 grams and we have two molecules or two moles of ammonia gas.

02:36 So the mass here is also 34 grams.

02:39 So the law of conservation of mass is observed here.

02:45 Now in equation b we have in equation b we have hydrochloric acid reacting with potassium hydroxide in an aqueous solution...

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