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For the diprotic weak acid H2A, Ka1 = 3.5 × 10-6 and Ka2 = 6.7 × 10-9. What is the pH of a 0.0800 M solution of H2A? What are the equilibrium concentrations of H2A and A2- in this solution?
Identify the type of chemical reaction represented by the following diagram. Place appropriate charges on the species on both sides of the equation.
the carbon-14 decay rate of a sample obtained from a young tree is0.374 disintegration per second per gram of the
How many protons are required to heat 200mL of coffee from 22 degrees Celsius and 64 degrees Celsius
Where did the energy required to maintain the system at a constant temperature in the two isothermal processes described? PAth A- sudden irreversible decrease in pressure from P1 to P2 ( P2
a how much heat is required to warm 1.60 kg ofsand from 26.0c to 100.0 c?b a system releases 410 kj ofheat and does 135
a mass of 48.5 g of a certain substance can be dissolved in 29.1 cm3 of water at 20 degree celius. calculate the
determine volume of na2s2o3 sodium this sulfate and h2o water are required to produce an estimated 0.10 m solution
The electrons in the bonding orbital tend to be distributed between the two atoms. This is because of their tendency to be shared among the two nuclei.
We did an experiment to isolate acetylsalicyclic acid from aspirin using methanol. We crushed the aspirin tablet before the extraction began. Why were we instructed to crush the aspirin tablet before proceeding
How do you distinguish between molecular formula, empirical formula (simplest) and structural formula of benzene? (Draw structures)
A 10.00 g sample of sucrose (C12H22O11) was dissolved in 200.0 g H2O. What will be the vapor pressure of this solution at 100C? Sucrose is non-disscociated, non-volatile solute.
A 6.363 gram sample of a hydrocarbon is burned in a furnace and 19.966 grams of CO2 and 8.173 grams of H2O are collected. If the molecular weight of the compound is 168.31 grams/mole, what is the molecular formula
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