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Calculate the pH you would expect to measure if 20.0 mL of 0.5 M acetic acid were mixed with 10.0 mL of 0.5 M sodium acetate.
A 50.00-mL sample of groundwater is titrated with 0.0800 M EDTA. Assume that Ca2 accounts for all of the hardness in the groundwater. If 12.80 mL of EDTA is required to titrate the 50.00-mL sample, what is the hardness of the groundwater in molari..
A solution of acetic acid, HC2H3O2, on a laboratory shelf was of undetermined concentration. If the pH of the solution was found to be 2.39, what was the original concentration of the acetic acid
What must californium-250 be bombarded with to produce lawrencium-257 and 4 neutrons? a. carbon-8 b. boron-8 c. fluorine-11 d. boron-11
A 10 mL sample of a solution of Pb(ClO3)2 was diluted with water to 21 mL. A 10 mL sample of the dilute solution was found to contain 0.021 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution?
What is the coefficient of the water? K2O + H2O What is the mass of 2.10 x 1021 atoms of copper, Cu? What is the molar mass of aspirin, C9H8O4?
The required ionic concentrations are Na+=2.45M; K+=.0086M; Mg2+ =.0517M; Ca2+=.0109M, HCO3-=.0025M, CL-=2.48M; SO4 2-=.0486M
The solubility of oxygen in water is 6.5mg/L at an atmospheric pressure of 1 atm and temperature of 40°C. Calculate the Henry's law constant of oxygen at 40°C.
one mole of an ideal gas (Cp=7R/2) in a closed piston cylinder is compressed from initial state of temperature =100 K pressure = 0.1 MPa to final state of pressure =0.25 MPa by the following pathways.
what mass of aspirin can be prepared by reacting 5.00 g if salicylic acid with an excess of acetic anhydride?
Metabolic regulation is achieved via regulating enzyme activity in 3 ways: allosteric regulation, covalent modification, and enzyme synthesis/degradation
What is the conjuate base of HPO4^2- C. Which acid has the weaker conjugate base. D. which acid has the stronger conjuate base. E. which acid produces more ions
Determine the number of electron pairs (both bonding pairs and lone pairs) on the iodine atom in the following.
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