(Solved): 15. The following reaction shows reaction of potassium phosphate and silver nitrate. \( \mathrm{K}_ ...

15. The following reaction shows reaction of potassium phosphate and silver nitrate. \( \mathrm{K}_{3} \mathrm{PO}_{4}(\mathrm{aq})+3 \mathrm{AgNO}_{3}(\mathrm{aq}) \rightarrow \mathrm{Ag}_{3} \mathrm{PO}_{4}(\mathrm{~s})+3 \mathrm{KNO}_{3}(\mathrm{aq}) \) a) Write the ionic equation and net ionic equation of this reaction. b) If \( 1.00 \mathrm{~g} \) of potassium phosphate and \( 3.00 \mathrm{~g} \) of silver nitrate were reacted, how many grams of silver phosphate will be obtained from this reaction? Which one is the limiting reagent? c) If your actual yield of silver phosphate was \( 1.38 \mathrm{~g} \), what is the percentage yield of this reaction? 16. The following shows iron purification from iron ore \( \left(\mathrm{Fe}_{2} \mathrm{O}_{3}\right) \). \[ \mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+3 \mathrm{CO}(\mathrm{g}) \rightarrow 2 \mathrm{Fe}(\mathrm{s})+3 \mathrm{CO}_{2}(\mathrm{~g}) \] a) If \( 3.00 \mathrm{~g} \) of \( \mathrm{Fe}_{2} \mathrm{O}_{3} \) and \( 2.00 \mathrm{~g} \) of \( \mathrm{CO} \) were used in this reaction, which one is the limiting reactant? b) How many grams of Fe will be produced when the reaction is completed? c) If you obtained \( 1.78 \mathrm{~g} \) of iron from your experiment, what is the percent yield of your experiment? 17. The following you can find some unknown species with atomic number and mass information. a) Identify all the atoms above. \[ { }_{15}^{31} A,{ }_{16}^{32} B,{ }_{12}^{32} C,{ }_{15}^{37} D,{ }_{32}^{72} E \] b) Which of the species are isotopes? Explain your answer. 18. Conduct indicated unit conversion below with correct significant figure calculation: a) 17.6 miles to meters \( (1 \) mile \( =1,60934 \mathrm{~km}) \) b) Number of H atoms in \( 2.50 \) moles of ammonia \( \left(\mathrm{NH}_{3}\right) \quad\left(1\right. \) mole \( \left.=6.022 \times 10^{14} \mathrm{atoms}\right) \) c) \( 45.0^{\circ} \mathrm{F} \) to kelvin temperature \( (\mathrm{K}) \) \( \left({ }^{\circ} \mathrm{C} \times \frac{9}{5}+32={ }^{\circ} \mathrm{F}\right. \),