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starting with solid sodium chloride, how would you make one liter of 2.000 ppm sodium chloride solution
If 0.7438 g of potassium hydrogen phthalate is used and the equivalence point occurs at 33.00 mL of NaOH, calculate the molarity of the NaOH solution to the correct number of significant figures.
which compunds moves to the aqueous NaOH? Provide the chemical reaction that occured when NaOH was added. Clearly indicate the different between ionic bond and covalent bond.
The weight of the purified caffeine is often much lower than the weight of the crude caffeine. Explain the reason why.
Partial pressures of SO2 and N2, 3.00 g of SO2(g) is originally in a 5.00 L vessel at 21 degrees Celsius and is transferred to a 10.0 L vessel at 26 degrees Celsius. 2.35 g N2(g) is originally in a 2.50 L vessel at 20 degrees Celsius and is transf..
Determine what is the observed rate for the given reaction - empirically determined rate
Calculate the number of kilograms of helium needed to inflate a balloon to a volume of 100,000 L at an atmospheric pressure of 250 mmHg and a temperature of -35 °C.
A sample of gas is collected over water at a temperature of 35.0?C when the barometric pressure reading is 625 torr. What is the partial pressure of the dry gas, given PH2O = 42.2 torr?
The steam is comes out of the feed water at 200 C. The water at a flow rate of 500 kg/h enters the feed water heater at 20C. Calculate the feed water exit temperature.
If you remove a piece of paper with a secret message written with lemon juice from a tincture iodine bath and let it dry, what will happen over a long period of time? Explain why?
Identify the group of elements that corresponds to each of the following generalized electron configurations and indicate the number of unpaired electrons for each
Calculate the mass of nitrogen dissolved at room temperature in an 81.0L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.
Consider an aluminum atom to be a sphere with radius equal to 143 pm and calculate the volume actually occupied by the atoms in your aluminum cylinder
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