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What mass of NH4Cl must be added to 200 mL of a 0.200 M NH3 solution to make a buffer with pH = 9.30?
The pH of a Salt Solution. What is the pH of 0.50-M sodium benzoate? The benzoate ion (C7H5O2-) is the anion of benzoic acid.
How much HCl solution is required to reach the equivalence point in the titration of the above solution?
If 25 mL of a 0.45 M AgNO3 solution is added to an excess of a 1.2 M NaCl solution, what mass of AgCl will be preciptitated?
Assume the solar irradiance is 1500 W/m2 and the total planetary albedo is 25 percent. (The Stefan Boltzmann constant is 0.567e-07 W/m2/K4).
Building an Aquatic Ecosystem.A 1st grade class was planning to build a simple ecosystem in a jar, and add water, algae, and small aquatic animals
Which compund appears to have the strongest intermolecular forces at 100C If one compound has a higher equilibrium vapor pressure.
Can you please describe a symbiotic relationship. Can you please also include the organisms involved, describe how they interrelate
What is the pH of 0.097 M of triethylammonium chloride (CH3CH2)3 NHCL?
List the following in order of increasing pH of their 0.1 M aqueous solutions (lowest to highest pH)
Over what range of pH is a HOCl - NaOCl buffer most effective?
Where Did Life First Evolve?Question: Describe the evidence that suggests that life first evolved on the sea floor near deep-sea vents.
Pure sulfuric acid can be used as a solvent. Write an equilibrium to represent the self-ionization reaction.
At which point is the actual growth rate of the population greatest?At which point is the actual growth rate negative?
In the lab experiment you carefully collect all of the gas formed and find that there is 425.6mL of gas. What is your percent yield?
Write a chemical equation for the following reactions: zinc sulphate + barium nitrate.
Commercial steric acid (C17H35COOH) contains palmatic acid (C15H31COOH) as an impurity. If a 1.115 gram sample of commerical steric acid is dissolved.
Using Ostwald process, what mass of nitric acid could be produced from 75.0 g of N2 and 50.0 g of H2?
One gram of NaCl and one gram of sand are added to 100mL of water. What is the solvent?
How many moles of chloride ions are in 250.0mL of a 0.450M calcium chloride solution?
If 500 mg/L lactic acid is added to pure water and you add NaOH until the pH = 3.1, what are the final amounts of each species in the acid equilibrium?
An aqueous solution contains dissolved C6H5NH3Cl and C6H5NH2. The concentration of C6H5NH2 is 0.50 and pH is 4.20.
Differentiate between: 1. Vulnerable and Non-vulnerable species 2. Functional and numerical responses of predators to chnage in prey density
What volumes of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1 liter of solution buffered at Ph of 3.55?
What are the equations for these metals when mixed with 6 M HCl. Ca, Cu, Mg, Fe, Sn, and Zn. (I tried Ca + HCl and got 3 Ca + 6HCl --> 3CaCl2 + 3H2)