They mostly use seawater with an average TDS of 40.000 ppm and brackish water with an average TDS of 10.000 ppm and can be found in each continent, Distributieweg 3 2645 EG Delfgauw The Netherlands Phone: +31 152 610 900 fax: +31 152 616 289 e-mail: info@lenntech.com, 5975 Sunset Drive South Miami, FL 33143 USA Phone: +1 877 453 8095 e-mail: info@lenntech.com, Level 5 - OFFICE #8-One JLT Tower Jumeirah Lake Towers Dubai - U.A.E. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/l, 599 mM). Thanks alot . Water has great abundance on the Earth, and of that abundance about 97% is sea water. Problem #4: What is the molarity of 5.00 g of NaOH in 750.0 mL of solution? Sea water contains 3.5g of salt per liter.How many grams of salt are their in 2000ml of sea water? x = (2.00 mol L¯1) (0.7500 L) (98.0768 g mol¯1). Sea water contains about 30g of ionic sodium chloride, Na+Cl-, in every 1000cm³ of water. Problem #10: What volume (in mL) of 18.0 M H2SO4 is needed to contain 2.45 g H2SO4? Problem #9: What weight (in grams) of H2SO4 would be needed to make 750.0 mL of 2.00 M solution? Currently the world uses 11.000 desalination plants to produce daily 20 million cubic meters per day. (x) (0.7500 L) = 5.00 g / 39.9969 g mol¯1, (x) (0.7500 L) = 0.1250097 mol x = 0.1666796 M. Problem #5: How many moles of Na2CO3 are there in 10.0 L of 2.00 M solution? What volume of sea water contains 10^20 ion pairs, Na+Cl- ? An ideal chlorine level for the pool is one part per million chlorine (think of 1 ppm as being 1 g chlorine per million grams of water). Chemistry. Typically, the solution is for the molarity (M). This means that 1000g of average seawater contains 965 grams of water and 35 grams of salts. Phone: +971 4 429 5853 e-mail: info@lenntech.com, Copyright © 1998-2020 Lenntech B.V. All rights reserved, Plant Inspection & Process Optimalisation, Separation and Concentration Purification Request. Seawater also contains various dissolved atmospheric gases, chiefly nitrogen, oxygen, argon, and carbon dioxide. Red Sea at Jeddah: Chloride (Cl-) 18.980: 21.200: 23.000: 22.219: Sodium (Na +) 10.556: 11.800: 15.850: 14.255: Sulfate (SO 4 2-) 2.649: 2.950: 3.200: 3.078: Magnesium (Mg 2+) 1.262: 1.403: 1.765: 742: Calcium (Ca 2+) 400: 423: 500: 225: Potassium (K +) 380: 463: 460: 210: Bicarbonate(HCO 3-) 140-142: 146: Strontium (Sr 2+) 13---Bromide (Br-) 65: 155: 80: 72: Borate (BO 3 3-) 26: 72--Fluoride (F-) 1-- … This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na ) and chloride (Cl ) ions). the density of sea water is more than density of pure water. Problem #8: What weight (in grams) of NaCl would be contained in problem #7? (x) (1.000 L) = 245.0 g / 98.0768 g mol¯1. Some other components of seawater are dissolved organic substances, such as carbohydrates and amino acids , and organic-rich particulates. The two processes are substantially equal as to investment cost and time requirements. Sea water contains 5% salts by weight. sea water contains average of 1.08 * 10^3 ppm of Na+ and 270 ppm of SO4^2- . Seawater is denser than both fresh waterand pure water (density 1.0 kg/l at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proport… How many kilogram of fresh water must be added to 60 kg of sea water for the content of salt in solution to be made 3%? One kilogram of sea water contains 6 mg of dissolved `O_(2)`. B) the pNa and pSO4 for sea water. Math. Sea water contains about 3.5% by weight of salt (sodium chloride).The salinity does vary, and the combination of salinity and temperature has a major influence on ocean currents and behavior. The concentration of O2 in that sea water sample in ppm is: Average density at the surface is 1.025 kg/l. Expressed in %, it would be 96.5% pure water molecules and 3.5% of salts, dissolved gases, organic materials and undissolved particles. Suppose the molarity was listed as 2.0 M (two sig figs). separates thousands The comma (,) separates decimals, Source: Magazine - Water Condition & purification, Januray 2005, Reverse Osmosis Systems Softener Unit FAQ, Currently the world uses 11.000 desalination plants to produce daily 20 million cubic meters per day. Problem #3: What is the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution? For example, look at answer #8. method A, 85% of the metal can be recovered at a costs of P75 per ton of water pumped and processed. 1. Seawater, or salt water, is water from a sea or ocean. Reverse Osmosis Systems Softener Unit FAQ. Like this: Problem #6: How many moles of Na2CO3 are in 10.0 mL of a 2.0 M solution? The concentration of `O_(2)` in the sample in ppm is : How to display the answer? (x) (0.4000 L) = 5.30 g / 105.988 g mol¯1. What is the molarity of sodium chloride in sea water? Average ocean water has a salinity of 35g of dissolved salts. Seawater contains 0.0079 g Sr2+ per kilogram of water. calculate A) the molar concentrations of Na+ and SO4 ^2- given that the average density of sea water is 1.02 g/ml.