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Name and describe at least 3 ways in which the EARLY EARTH (and the other "Terrestrial" planets in the inner solar system; Mercury, Venus and Mars, when they were young) probably obtained the organic chemical building blocks necessary for the origin of life. Some of these are endogenous ("native generated") to the planets, and many are exogenous ("foreign generated".)
Soggy french fries drenched in Vinegar, which is a 0.83M solution of acetic acid. If the acetic acid in vinegar is 0.47% dissociated, calculate Ka for acid. What is the pH of this solution
Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
What are aromatic compounds woth reference to structures in organic chemistry.
For the titration of 40.0 mL of 0.250 M acetic acid with 0.200 M sodium hydroxide, determine the pH when
The pH of a 9.63×10-4 M solution of a weak base is 10.15. Calculate Kb for this base to three significant figures.
1. Explain what is happening to electrons when light is emitted in emission spectra. 2. List the possible energy level changes for electrons emitting visible light in the hydrogen atom. What is the name of this series of lines?
As per to the EPA, the maximum contaminant level (MCL) of antimony in drinking water is 0.0060 mg/L. (a) Transfer the MCL of antimony from milligrams per liter to parts per billion (ppb).
Calculate the number of moles of sodium hydroxide that will completely react with the amount of olive oil and Crisco shortening that you are using (15g olive oil and 34g Crisco).
An experiment shows that a 250mL gas sample has a mass of 0.434g at a pressure of 744mm Hg and a temperature of 27C. What is the molar mass of the gas?
A voltaic cell consists of an Mn/Mn2+ half-cell and a Pb/Pb2+ half-cell. Calculate [Pb2+] when Ecell is 1.017 V and [Mn2+] = 0.589 M. Use reduction potential values of Mn2+ = -1.18 V and for Pb2+ = -0.13 V
If a 0.100 molar solution of NaOH is added to a solution containing 0.200 molar Ni2+, 0.200 molar Ce3+, and 0.200 molar Cu2+, which metal hydroxide will precipitate first?
Predict the formula and name of a binary compound formed from the following elements: (a) Na and H, (b)B and O, (c) Na and S, (d) Al and F, (e) F and O, (f)Sr and Cl.
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