Answered

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If you have 144 moles of As , you need moles of NaOH use it all up

If You Have 144 Moles Of As You Need Moles Of NaOH Use It All Up class=

Sagot :

ANSWER

The number of moles of NaOH is 432 moles

EXPLANATION

Given information

[tex]2\text{ As + 6NaOH }\rightarrow\text{ 2Na}_3AS_{O3}+\text{ 3H}_2[/tex]

The number of moles of As = 144 moles

Let x represents the number of moles of NaOH

From the above reaction, you will see that 2 moles of As react with 6 moles of NaOH

The next step is to find the number of moles of NaOH using a stoichiometry ratio

[tex]\begin{gathered} 2\text{ moles of As }\rightarrow\text{ 6 moles of NaOH} \\ 144\text{ moles of As }\rightarrow\text{ x moles of NaOH} \\ \text{ Cross multiply} \\ 2\text{ }\times\text{ x = 6 }\times144 \\ 2x\text{ = 864} \\ \text{ Divide both sides by 2} \\ \frac{2x}{2}\text{ = }\frac{864}{2} \\ x\text{ = 432 moles} \end{gathered}[/tex]

Hence, the number of moles of NaOH is 432 moles

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