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Barium sulfate is used clinically to provide x-ray images of the digestive tract. How might barium sulfate be prepared in the laboratory from a double-displacement reaction of an ionic nitrate compound and sodium sulfate? write the balanced equation including states of matter
How is hydrogen bond differnt from an ionic or covalent bond?
Using the technique of the previous problem ?E was found to be -2,000.00 kJ/mol of an unknown liquid hydrocarbon at 298 K. In another experiment it was determined that for each mole of hydrocarbon, 4 moles of oxygen gas are consumed and 9 moles of..
how much sodium hydroxide must be added to a sample of seawater to completely precipitate 89.2 mg of magnesium ions present?
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100. g of H2O. Kf for H2O = 1.86
Calculate the distance (in Angstroms) and energy (KJ/mol) where the molecules are most attractive.
A sample obtained from that mixture containing 443900 particles weighs 10.0g. Determine the number and percent relative standard deviation of NaCN particels from a sample of the mixture weighing 7.16g.
(a) How many mL of KOH will it take to reach the equivalence point? (b) Calculate the pH at the equivalence point. The Ka of HClO is 3.8 x 10-8.
Calculate Gibbs free energy and determine the type of thermodynamic reaction and what type of thermodynamic reaction is shown.
What is the initial pH of this buffer? 2. What is the pH of the buffer in question
If 10 g of C react with 115 g of O2 according to the equation C + O2 → CO2, how many g of O2 will remain unreacted?
A 3.84-mole sample of a gas is held at a temperature of 297 K and a pressure of 286 atm. Determine the volume of the gas sample.
gaseous mixture of 2.34 kg of silane, Sih4 and 55.4 kg of Argon. Determine the mole fraction of silane
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