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While 10.00 mL of a solution of strong acid is mixed with 100.00 mL of a solution of weak base in a coffee-cup calorimeter, the temperature falls from 25.5oC to 21.3oC. Find out q for the acid-base reaction, presuming that the liquid a have densities of 1.00 g/mL and the same heat capacities as pure water
vitamin d responsible for strong bones has a molar mass of 384and is known to be 84.4 carbon. how many carbon atoms are
How many grams of KNO2 must be added to 5.00 liters of 0.67 M HNO2 solution to produce a buffer with pH = 3.15?
The pressure in a vessel containing methane and water at 70°C is 10 atm. At the given temperature the Henry's law constant for methane is 6.66 x 104 atm/mole fraction. Estimate the mole fraction of methane in the liquid.
What is the ratio of C-14 in a wooden object made in 100 BC to the one made of the same kind of wood in 700 BC? Half life of carbon-14 is 5730 years.
determine the gram formula mass of the compound
atomic masses. 6 pts an element has two naturally occurring isotopes isotope a has a mass of 120.9038 amu and a
How can i derive the equation dG= RT ln (Q/K) from the following two equations: dGrxn= dGrxn standard + RT ln Q and dGrxn standard= -RT ln k? I am extremely confused
What was the molar solubility of CaCO3 in this solution (Kb1(CO32-) = 1.8 × 10-4)
Given the reaction 4Al(s) + 3O2(g) --> 2Al2O3(s), what is the minimum number of moles of oxygen gas required to produce 1.00 mole of aluminum oxide?
what is the total number of liters of O2 at STP needed to produce 6.0 times 10^23 molecules of H2O.
waters heat of fusion is 80 calg and is specific heat is 1.0 calg degree celcius. some velmobile set have been designed
The most amino acids appear bluish purple when treated with ninhydrin reagent. Proline as well as hydrocyproline appears yellow. Propose a reason for this difference
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