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If 0.02 moles of PbCl2 is added to 500 dm3 of a 0.01 M salt water solution, what is the Qs value and will PbCl2 precipitate?Ksp = 1.6 x 10-5
Compute the % sodium carbonate (MM = 105.99 g/mol) in this sample.
Determine how many grams of Ammonia are needed to produce 130 grams of hydrogen flouride?
What are bonding theories? Why are they important? What may they be used for. HI has a force contents of 314 Nm^-1 and a bond length of 160.92 pm.
What is the pH of a propanoic acid - propanoate buffer that is 0.25M in CH3CH2COONa and 0.15M with respect to CH3CH2COOH.
Two determinations of the dissolved oxygen content of a 200 mL sample of water, made five days apart, gave 5.3 ppm and 2.2 ppm of dissolved O2 respectively.
Just transfer this solution completely to a flask of 1L volumetric and dilute to exactly 1 liter and then compute the Fe 2+ ion concentration.
A reaction of one liter of chlorine gas with 3 liters of fluorine gas yields 2 liters of a gaseous product. All gas volumes are at the same temperature and pressure. What is the formula of the gaseous product?
Determine the new pressure of the gas and express your answer in Pa
The Cl^- concentration in the water analysis given has been questioned. What concentration of Cl^- (mg/L) would make the cations and anions balance?
Determine How many moles each are in 1.30L of the saline solution if a physiological saline solution contains 174mEq/L each of Na+ and Cl - .
E85 fuel is a mixture of ethanol and gasoline. What mass in kilograms of E85 (d=0.758g/mL) can be contained in a 14.0 L gallon tank.
Compound X is a miracle drug used to cure every sneeze and sniffle. It is very expensive though and customers complain it doesn't always work as well as it should.
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