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Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the \rm ^14C has decayed to 1/32.0 of the original amount. How long ago was this plant alive?
There are 250g of Acetic Acid and 250g of Aluminum Hydroxide. What is the maximum amount of Aluminum Acetate that can be produced and which ingredient is the limiting reactant
A sample of sodium reacts completely with 0.142kg of chlorine, forming 234g of sodium chloride. What mass of sodium reacted?
If 37.5 mL of 0.274 M HCl solution is needed to neutralize an aqueous solution of calcium hydroxide, how manygrams of calcium hydroxide must be in the solution prior to the initiation of the titration experiment
Cl2 is one of the seven diatomic elements H2SO4 is sulfuric acid and has the sulfate ion with neg 2 charge CH4 is a methane molecule is organic and covalent GeCl4 Germanium tetrachloride which is ionic
When 35.0 g of an unknown nonelectrolyte is dissolved in 220.0 g of benzene, the solution boils at 83.2°C. Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
Construct a buffer to have a pH of 7.70 using HClO and NaClO (Ka = 3 x 10-8). How many grams of NaClO must be added to 1.0 L of a 0.40 M HClO solution
If 116g of butane burns in the presence of 320g of oxygen how much carbon dioxide will be produced
What is the structure of the product formed in the following reaction of an epoxide with ethoxide ion? If more than one stereochemical product is possible
caluclate the molecular mass of the compounds of Caffeine and Epinephrine. Round to the hundredth's place.
what type of solid phase would you use and what type of solvent would you select as an eluting solvent, to detect the biphenyl impurity?
Write chemical equations for the reaction of calcium with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations.
What is the pH of a 0.440 ammonia solution? with the kb value of 1.8*10^-5 What is the percent ionization of ammonia at this concentration. Express the percentage numerically to three significant figures
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