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Question- A fossil was analyzed and determined to have a carbon-14 level that is 60% that of living organisms. The half-life of C-14 is 5730 years. How old is the fossil?
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Sulfer Troxide dissolves in water producing H2SO4 explain how much sulfuric acid can be produced from 13.9 ml of water d= 1.00 g/mL and 24.5 g of SO3
If you mix 50mL of 0.1M TRIS acid with 60mL of 0.2M TRIS base, what will be the resulting pH?
Calculate the change of entropy for the water, ΔS water, and for the surroundings, delta S surroundings, when 1.00 mole of water freezes at 0 degrees C and the surroundings are at (a) 0 degrees C, (b) -2 degrees C. Explain the physical origin of t..
How many seconds would it take to deposit 0.500 g of Ni metal on an electrode by passing a 3.00 amp current through a solution of Ni2+
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[H+] of the rainfall over Washington, DC is 3.163*10-5 moles/liter. what is the ph of the rainwater
consider two carnot heat engines operating in series. the first engine receives heat from a reservoir at 2000 k and
Explain is the S-X bond length in one molecule longer than the other X = H, F, Reduce the relative direction of the dipole moments for the two molecules. Molecules are H2S as well as SF2
Construct a rough plot of pH versus volume of added base for the titration of 50 mL of 0.050 M HCN with 0.075 M NaOH. Ka = 4.0*10^-10 for HCN (a) What is the pH before any NaOH is added? pH = 5.36 (b) What volume of base, in milliliters, is requir..
U^o for the reaction A(s)+2B(g) ->2C(s)+D(g) was measured at temperature T in a constant volume calorimeter. ?H^o for the reaction is approximately what
Based on the first and fourth sketches(Part C figure) , what is the density of the block? First sketch shows mass of the block = 50g. Second sketch shows block completely immersed in water(at 20 degree Celsius), mass of block now = 5.6g and densit..
What is the molar solubility of CaF2 in 0.10 M NaF solution at 25°C? The Ksp for CaF2 is 1.5 x 10^-10
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