Oliver likes to go fishing in the river by his house. One day henoticed that there was a white substance on some rocks at thebottom of the river. When he looked closely, it appeared as thoughsomeone had sprinkled a powder or crystals in the water. Moreover,the substance was found mainly where a small creek joined thelarger river.

Curious, Oliver followed the creek through the forest toward anindustrial area. Eventually, he reached a fence and found thesource of the creek water — a large drainage pipe. Oliver noticedthat there was steam coming off the water as it flowed out of themetal pipe.

The temperature reading (in ^oC) of the water thatflowed out of the drainage pipe: 88.35

The temperature reading (in ^oC) of the water in theriver: 7.14

Analysis at four differnt points along the creek and riverrevealed that the chemical potassium nitrate was found in thewater.

1. Explain what is happening, in general terms, by applying yourunderstanding of solutions and solubility.
2. Use the information provided to calculate the concentration ofthe solution in parts per million (ppm).
   • Point A: 14.7 g of KNO_3(aq) in 1.00 x10³ L of H₂O_(l)
   • Point B: 1.12 g of KNO_3(aq) in 1.00 x10² L of H₂O_(l)
   • Point C: 200 mg of KNO_3(aq) in 1.00 x10² L of H₂O_(l)
   • Point D: 0.061 g of KNO_3(aq) in 1.00 x10¹ L of H₂O_(l)

   Note that 1 ml of water has a mass of 1 g.

   In addition to potassium nitrate, analysis revealed there wasfour other chemicals found in the water at Point A.

3. Use the information provided to calculate both the molar massand molarity for each chemical found in the water.
   • Sodium sulfate: 25.8 g ofNa₂SO_4(aq) in 1.00 x 10¹L of H₂O_(l)
   • Sodium carbonate: 582.2 mg ofNa₂CO_3(aq) in 1.00 x 10²L of H₂O_(l)
   • Barium chloride: 6.8 mg of BaCl_2(aq) in1.00 x 10³ L ofH₂O_(l)
   • Magnesium phosphate: 212 g ofMg₃(PO₄)_2(aq) in 1.00 x10¹ L of H₂O_(l)
   Potassium nitrate: 14.7 g of KNO_3(aq) in 1.00 x10³ L of H₂O_(l)
4. The pipe used by the factory was made of an alloy of steel(Iron (Fe) = 90%, Carbon (C) = 8.5%, Manganese (Mn) = 1.5%). Whatamount (in kilograms) of each element was found in the pipe if ithas a mass of 24.9 kg?
5. An alloy of gold contains 65% gold (Au), 16.5% silver (Ag), andsome copper (Cu). What amount of copper would you expect in 59.8 gof this gold alloy?