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Problem- Find the absolute and percent relative uncertainty and express each answer with the correct number of significant figures.
a) 9.43 (±0.05) x {[6.2 (±0.2) x 10^3] + [4.1(±0.1) x 10*3]} = ?
b) log[3.14 (±0.05)] = ?
c) 435.1 (±0.1) + {97.2 (±0.2) x ln[57.3 (±0.4)]} = ?
You must show your work in an efficient manner so I can understand it in clearly
The Lakes that have been acidified by acid rain can be neutralized by the addition of limestone (CaCO3). Explain how much limestone in kilograms would be needed to completely neutralize a 5.2 × 10 9 L lake containing 5.0 × 10 -3 g of H2SO4 per li..
Explain which one of the subsequent conditions is always true for a titration of a weak acid with a strong base. A colored indicator with apKa less than 7 should be used.
Calculate the freezing point and boiling point of each of the following solutions using the observed van't Hoff factors(a) 0.064 m MgCl2
at 25 degrees C calcium fluoride has a solubility product constant Ksp= 3.0*10/\(-11). If enough CaF2 is added to saturate the following solutions, determine the equilibrium concentrations
The first ionization energy of Ca is 590 kJ/mol and its second ionization energy is 1145 kJ/mol. The heat of sublimation of Ca is 178 kJ/mol. The bond energy of Br2 is 193 kJ/mol, the heat of vaporization of Br2(l) is 31 kJ/mol , and the electron ..
What is the half-life of a compound if 89 percent of a given sample of the compound decomposes in 56 min? Assume first-order kinetics.
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
compressed isothermally from 230 K and 150 kPa, and its entropy decreases by 15.0 J/K. Find the final pressure and DG for this process.
A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.8635 g of CO2 and 0.1767 g of H2O.
Problem- Consider a reaction with two competing pathways. One is labeled as the kinetic pathway while the other is labeled as the thermodynamic pathway. How could you use temperature to favor the kinetic pathway over the thermodynamic pathway. Why
a current of 2.40 a is passed through a solution containing cu2aq for 30.0 minutes with copper metal being deposited at
Explain when an additional mol of gas is added at constant temperature and volume to a flask containing 2.00 mol of gas at 25oCand 1.00atm pressure, the pressure increases to 1.60 atm.
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