In: Chemistry
A. Approximate Molarity of Calcium Ions (Ca2+ (aq)) in Tap Water is 2.99 x 10^-3 M.
1- How many moles of Calcium Ions are present in 25 mL?
2- How many grams of calcium ions are present in 25 mL?
B. Approximate ppm of Calcium Ions (Ca2+ (aq)) in Tap Water is 120 ppm.
1- How many grams of Calcium Ions are present In 1,000,000 mL based on the concentration determined in ppm?
2- How many grams of Calcium Ions are present In 25-mL based on the concentration determined in ppm?
A)
1 ) 74.75 * 10—6 moles of calcium ions are present in 25 mL solution .
2) 2.99*10—3 grams of calcium ions are present in 25 mL solution .
The detail calculations are shown below .
B)
1) 120 grams of calcium ions are present in 1000000 mL of water solution .
2) 0.003 grams of calcium ions are present in 25 mL of water solution .
The detail calculations are shown below .