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Problem- What is the mass percent (w/w%) of KBr in a solution made by dissolving (3.5x10^-1)g of KBr in (4.10x10^-1) L of water (d=1.00g/ml)
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Stalactites--the long icicle, icicle like formations that hang from the ceilings of caves--are formed from recrystallizing minerals like calcite (calcium carbonate, CaCO3, 100.09 g/mol). The Ksp of calcium carbonate is 4.5 x 10^-9.
an antacid tablet containing magnesium hydroxide as an active ingredient requires 22.6 ml of 0.597 m hcl for complete
what are the standard half cell potentials; E anode and E cathode? If the electrochemical cell is allowed to operate as a gavanic cell, which solution species will be oxidized, which solution species will reduce
At 0°C a 1.00 L flask contains 6.90 10-2 mol N2, 4.40 102 mg O2, and NO at a concentration of 9.00 1018 molecules/cm3. What is the partial pressure of each gas, and what is the total pressure in the flask?
A saturated solution of nickel(II) sulfide contains approximately 3.6 multiplied by 10-4 g of dissolved NiS per liter at 20°C. Calculate the solubility product Ksp for NiS at 20°C.
Write the structure of a different product that could have been formed if you used ethanol containing substantial amount of water instead of the absolute ethanol
What are the Color spectrums for Cabbage Juice and Grape Juice. Which one is a better indicator.
Presume you have 5.00 g of powdered magnesium metal 1.00 L of 2.00 M potassium nitrate solution and 1.00 L of 2.00 M silver nitrate solution.
consider an ideal gas being heated reversibly from t1 to t2 at a constant volume and then allowed to expand
A buffer is prepared by dissolving 52.203g of HNO2 and 65.552g Mg(NO2)2 into water forming 2.5 L of solution. What is the pH of the buffer. keep in mind: Mg(NO2)2 (s)--------->H30+ (aq) +NO2- (aq)
assume that 50.0 ml of 0.100 m hcl was added to 125ml of 0.100m sodium acetate. is the resulting solution a buffer?why
calculate the amount of heat(in kj) required to convert 94.6g of water to steam at 100 degrees celsius. (the molar heat of vaporization of water is 40.79 kj/mol)
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