A sample of seawater contains 1.3 g of calcium ions in 3,100 kg of solution. Wha

Question

A sample of seawater contains 1.3 g of calcium ions in 3,100 kg of solution. What is the calcium ion concentration of this solution in units of ppm.

a.ion-ion attractions between K+ and Cl– ions

ion-dipole attractions between Cl– ions and the hydrogen atoms of water

ion-dipole attractions between Cl– ions and the oxygen atom of water

hydrogen bonding between the Cl– ions and water

a.ion-ion attractions between K+ and Cl– ions

ion-dipole attractions between Cl– ions and the hydrogen atoms of water

ion-dipole attractions between Cl– ions and the oxygen atom of water

hydrogen bonding between the Cl– ions and water

Explanation / Answer

The concentration in ppm is equal to 100000 times the mass of solute in mg divided by mass of solution in mg.

Cppm = 1000000 x msolute (mg) / msolution (mg)

Cppm = msolute (mg) / msolution (kg) = 1.3 x 1000mg / 3100kg = 0.4194ppm

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