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If an electrical component with a resistance of 50 is connected to a 120-V source, how much current flows through the component? What battery voltage is necessary to supply 0.50 A of current to a circuit with a resistance of 20 ?
When a base is added to an acid they neutralize each other except when they make a pH of 7, in this case find the exact amount for the two solutions below
consider the following mechanism for the formation of a dna double helix from its strands a and ba b unstable helix
The addition of NH3 precipitated Fe2O3·xH2O which was subsequently ignited to produce 0.304 g of Fe2O3. What was the mass of FeSO4·7H2O in the 3.075-g sample
Explain how many electrons per atom are delocalized in the sea of electrons model for the subsequent metals. a) iron b)vanandium c) silver
Products at Home Containing Organic Molecules, Find two or more products in the home that contain organic molecules. From these products, make a list of 10 organic compounds present in the products.
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
An automobile tire has a pressure of 255 kPa gauge in the summer when the tire temp after driving is 50C. Explain what is the winter time pressure of the tire at 0C if the volume of the tire is considered the same and there are no leaks
What is the simplest explanation of why the 45kD and the 90kD proteins copurified the column. What would be an alternative explanation
What is the theoretical yield of vanadium that can be produced by the reaction of 40 g of V2O5 with 40 g of calcium based on the following chemical reaction? V2O5(s) + 5Ca(l) yields 2V + 5CaO
calorimetry can be used to find heats of combustion. suppose a calorimeter helps someone to determine that 4032 kj of heat is released during the combustion of 88.0 grams of propane, C3H8 (44.0 g/mol).
Question- What is the maximum volume of 4.9E-5M K2CrO4 that, added to 17.0ml of a solution that is 8.6E-5M Ba(NO)2 and 5.4e-6 M Pb(NO3)2, will precipitate PbCrO4 bit not BaCrO4? For PbCrO4, Ksp=1.8e-14 and for BaCrO4, Ksp=1.2e-10
• How does the magnitude of Ka (or pKa) affect the equivalence point volume and why? Briefly explain your reasoning.• How does the magnitude of Ka (or pKa) affect the equivalence point pH and why? Briefly explain your reasoning.
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