An element exists as two isotopes: Isotope A with a mass of $62.93$ amu ($69.17\%$) and Isotope B with a mass of $64.93$ amu ($30.83\%$). Calculate the average atomic mass.
2Multiple Choice
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Consider the reaction $2H_2 + O_2 \to 2H_2O$. If $4.0\,g$ of $H_2$ reacts with $16.0\,g$ of $O_2$, what is the limiting reactant?
3Multiple Choice
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Calculate the pH of a solution prepared by diluting $10.0\text{ mL}$ of $0.500\text{ M HCl}$ to a final volume of $500\text{ mL}$.
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