Question

A solution contains 20 ppm Ca+2. Express the Ca+2 concentration in the following terms:

21. A solution contains 20 ppm Cat2. Express the Ca+2 concentration in the following terms: a. g Cat2 in 1,000,000 mL water (mL = 0.001 L) b. g Cat2 in 100 mL water c. % Cat2 in the 100 mL water d. mg Ca 2/kg water (mg = 0.001 g = 0.000001 kg) e. molarity (M or moles Cat2/L).

Answer 1

meane ng expressed as Parts per million. It can also be milligrams per litre (mg/). : 20ppm ca 27 = 20mg ca Solution , in 1000ml » 1000m present & cat = 20mg Cart - 20x103g Cart 6 @ 1000 me Solution contains 20x103 g la .. ,000,000 m 20 410-39 x 1000 WIB me 1000 = 20 g ca 2tion. 1000 m2 Solution contains 20x10 3g Cart 100 m2 s & 20x10 3g xioon 10oo war 2 208104 g Cart Density of water is agm (at 25°c). : 1 kg Water 2 1000ml, water. i tng water contents 20ing Ca 2+ ion. 20 mg cat /kg water.

26) 20x10-s aca2tion - 2011 g Cart 40 g/mol - 0.54103 mol cant , solution contains 0.5X103 mol ca 2+. . 1000 ml Indlarity = - 8.5x10 3 (M) 5.0x104 (M). 0 1000mm contains 20mg cat, 100 me contries 2 mg cart soz y cat in 100 mt water. 2 7 Cart in 100 ae water