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A fossil was analyzed and determined to have a carbon-14 level that is 46.0 that of living organisms. How old is the fossil?
If, in practice, 5.0 mL of 16.0 M nitric acid were added to effect the dissolution of the copper, what would be the minimum volume of 4.00 M NaOH required to neutralize the remaining acid and convert all of the Cu2+(aq) to Cu(OH)2(s)
A sample of krypton gas has a volume of 500.0mL at -125 degrees C and 225mmHg. Calculate the pressure in mmHg if the gas occupies 220.0 mL at 100 degrees C.
What is the correct ratio of dissociated and undissociated components to make 0.5 L of 0.2 M phosphate buffer, pH 7.7. The correct answer is 8/1, but I'm confused on how to solve the problem.
Assuming that a neutron star has the same density as a neutron (4.0 x 10^14 g/cm3), calculate the mass (in kg) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.20 mm.
Standard solutions of calcium ion are suually prepared by weighing an apporpriate amount of primary standard grade calcium carbonate, dissolving it in concentrated HCl, and diluting to the appropriate volume.
a 25 ml sample containing cu2 gave an instrumentsignal of 23.6 units corrected for a blank. when exactly 0.5 mlof
For the following precipitation reactions, calculate how many grams of the first reactant are necessary to completely react with 54.0 grams of the second reactant.
A 2.0 L-reaction flask initially contains 0.17 mol CO, 0.15 mol H2, and 0.10 mol CH3OH (methanol). If this mixture is brought in contact with a zinc oxide-chromium(III) oxide catalyst, the equilibrium shown below is attained.
Oxalate ion, C2O4 2-, and permanganate ion,MnO4 -1,react in aqueous basic solution to give carbonate ion, CO3 2-, AND solid manganese dioxide,MnO2. What is the complete and balanced equation
If 50.0 g of CO2 (g) and 12.0g H2O (g) are formed when a hydrocarbon compound is burned in excess O2. What is the mass
Predict the chemical formulas and IUPAC names of the missing reactants or products, to complete the following chemical reactions
Consider the reaction when aqueous solutions of barium acetate and chromium(III) iodide are combined. The net ionic equation for this reaction is
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