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Magnesium ions can be precipitated from seawater by theaddition of sodium hydroxide.How much sodium hydroxide in grams must be added to a sampleof seawater to completely precipitate the 83.2 mg of magnesiumions present? (Hint: Begin by writing a balanced equation for thereaction between magnesium ions and sodium hydroxide.)
A solution is prepared by dissolving 228 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
how would you synthesize 2-ethyl-1,3-hexanediol in the lab setting? starting from simple organic compounds such as benzene
how many grams of NO2 will be produced when 2.0 L of nitrogen at 840 mmHg and 24 C are completely reacted N2+2 O2-----2 NO2
An empty Erlenmeyer flask weighs 261.9 g. When filled with water (d = 1.00 g/cm3), the flask and its contents weigh 465.2 g. What is the flask's volume in cm^3?
The element Na has bcc packing with a body-centered cubic unit cell. The density of sodium is 966 kg/m3. Calculate the volume (m3) of the unit cell of sodium.
calcium oxide or lime is produced by the thermal decomposition of limestone in the reaction cacomc062-1.jpgs
What would happened if HCl was accidentally used instead of Na2CO3 to extract caffeine from tea bags? Would you be able to fix your mistake. How
Identify how precitipation reactions can be used in the water treatment and purification processes to help maintain a safe municipal water supply.
consider a piece of gold jewelry that weighs 9.78 g and has a volume of 0.680 cm3. the jewelry contains only gold and
Calculate the molarity of the solution produced by mixing the following substances. (Assume that the volumes are additive.) (a) 40.0 mL of 0.160 M NaCl and 65.0 mL of 0.133 M NaCl
determine the molarity of a solution formed by dissolving 15.79 grams of cacl2 calcium chloride in 200.grams of h2o
What volume of a 6.16E-2 M potassium hydroxide solution is required to neutralize 19.8 mL of a 0.107 M hydroiodic acid solution.
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