What is the meq weight (mg/meq) of Ca2+ if the atomic weight is ~40?
What is the meq weight (mg/meq) of Ca2+ if the atomic weight is ~40?
Convert 4 mEq/10 mL of Calcium Chloride to.................mg/mL. (Ca atomic weight =40, Cl atomic weight =35.5) (don't indicate units and use 3 significant figures.
A synthetic water was prepared which consist of 1.5 mM CaSO4 (3 meq/l Ca2+, 3 meq/l SO4), 1mM MgSO4 (2 meq/l mg2+, 2 meq/l SO4), and 4 mM NaHCO3 (4 meq/l Na+, 4 meq/l HCO3) 1 2 3 CaO (mg) 0 102 56 Na2CO3 (mg) 0 86 0 What is the “theoretical” hardness and alkalinity for each solution after softening and filtration but before recarbonation?
Groundwater is defined by the following analysis: Ca2+ = 80 mg/L as Ca2+ Mg2+ - 55 mg/L as Mg2+ HCO3-350 mg/L as CaCO3 pH = 8.0 FORMULA CaCO3 Ca2+ Mg2+ EQUIVALENT WEIGHT (g/EW 50 20 12.2 61 HCO3 mg as CaCO3 L mg Equivalent Weight of CaCo3 (g/EW) as species X L Equivalent Weight of Species (g/EW) Noncarbonate hardness (NCH) of the raw water, in mg/L as CaCO3, is: 1) 55.0 2) 76.3 3) 135.0 4) 200.0 5) 350.0
Based on the sample calculation, the CEC of the soil was 50.8 meq/100g and the equivalent weight of Ca2+ (one of the base cations) extracted by ammonium acetate solution was 3.13 meq/100g. The ammonium acetate solution also contains 150 mg K+/L, 75 mg Na+/L, and 83 mg Mg2+/L. calculate the equivalent weight of K+, Na+, and Mg2+ in a 5 g soil: 35 mL extractant. Given all these values, compute the base saturation of the soil.
(35 points) For the following water sample please complete the table (meq/L and mg/L as CaCO3) and the questions that follow (Remember - 50 mg CaCO3/meq CaCO3) lon mg/L mg/meq meq/L (Please fill in the values below) as CaCO3 mg/L HCO3 125 61.0 2- 35 250 30.0 Mg K* Fe2 Mn2+ SO.2 NO3 NO2 Ca2 12.2 100 39.1 27.9 175 12 27.5 300 48.0 62.0 2 0.1 46.0 155 125 20.0 CI Na* 35.5 25 23.0 pH 7.0 (15 points)...
Soil testing laboratories usually estimate cation-exchange capacity (CEC) as the sum of Ca2", Mg, and K displaced during extractions with neutral, 1 N ammonium acetate (NH 0Ac), which are performed primarily to test for available K. The following data were thereby obtained for three contrasting soils, but have been reported as pounds per acre for each of the three elements, assuming the conventional weight of 2 million pounds for an acre of soil 6 inches deep. Soil A 4004 381...
Part A. A lactated Ringer's solution with 5% glucose contains Na+ 134 mEq/L , K+ 4 mEq/L , Ca2+ 2 mEq/L , Cl− 110. mEq/L , lactate− 30. mEq/L , and 50. g/L glucose (C6H12O6). What is the osmolarity (Osm) of the solution? Express the osmolarity to two decimal places. Part B: Acetic acid has a Ka of 1.8×10−5. What is the pH of a buffer solution containing 0.17 M HC2H3O2 (acetic acid) and 0.17 M C2H3O2−? Express your answer...
What is meq/L of 212 mg/L of Ca+2?
Wastewater contains 10 mg/L NH3. Its N concentration = _____ mg N/L. (Hint: atomic weight: N, 14 g/mole; H, 1 g/mole)
Element Atomic Weight C 12 Ca 40 H 1 N 14 Na 23 O 16 A 1 millimole/L Sodium Lactate (NaC3H5O3) solution would be equal to what mg% concentration? 47 4.8 33.6 3.6 4.7 2.3 11.2 36 22 9.9 14 48 5.6 2.2 23