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Explain what is the concentration of a NaOH solution prepared by diluting 25mL of a 1.975M NaOH solution to a total volume of 500mL?
A nutritional calorie (Cal) is equal to 1 Kilocalories (Kcal). A package of crackers has 115 nutritional calories
A lake has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the percentage of aqueous NH3 in the lake
natural gas can be represented by ch4 methane and gasoline can be represented by c8h18 octane. write the chemical
The concentration of Al and Na in a sample of riverwater are 0.050 mg/kg and 5.2 mg/kg respectively. Express concentrations in molality of both Al and Na
Formic acid (HCO2H, Ka=1.8X10^-4) is the principal component in the venom of stinging ants. What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point
When 2.00 mol of NOCl(g) was heated to 225 degrees celcius in a 400L steel reaction vessel, the NOCl partially decomposed according to the equation 2 NOCl(g) -->2 NO(g) + Cl2(g)
If 133 g of ice at 0.0°C is added to 1.96 L of water at 76°C, what is the final temperature of the mixture
acid catalyzed hydrolysis of esters is usually better than base catalyzed hydrolysis. True or False.............2. Borane selectively reduces a carboxylic acid while it leaves an ester alone.
What minimum mass of succimer (C4H6O4S2) (in mg) is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 25 micrograms/deciliter.
The atmospheric pressure is 762 mmHg. The temperature of the experiment is 27 C. Define how many moles of hydrogen have been liberated, as well as what is the mass of the magnesium that reacted
Arrange the atoms I, Zr, Ag, and rb for smallest to largest first ionization energy. what does this say about metals vs nonmetals
a cylinder storing oxygen at 20 mpa at 0 degrees celcius might explode if the pressure exceeds 50 mpa. what is the
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