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A loudspeaker has an output of 80 dB. If the volume of the sound is turned up so that the output intensity is 10,000 times greater, what is the new sound intensity level?
In photosynthesis, plants from glucose (C6H12O6) and oxygen from carbon dioxide and water
Determine the hormone response to the metabolic conditions: a) Well fed b) Fasting
A sports-ultility vehicle has an average mileage rating of 18 miles per gallon. How many galllons of gasoline are needed for a 397-mile trip
A 25.0-mL aliquot of vinegar was diluted to 250 mL on a volumetric flask. Titration of 50.0-mL aliquots of the diluted solution required an average of 34.88 mL of 0.09600 M NaOH. Express the acidity of the vinegar in terms of the percentage (w/v) ..
A current of 4.00 A is passed through a Ni(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 6.60 g of nickel
Explain why in some cases a compound may be an acid as well as in other case not? For example, HCL (hydrogen chloride).
Consider two samples of liquid: one mole of water H2O and one mole of ethanol C2H5OH. The density of water is 1.0 g/mL, and the density of ethanol is 0.785 g/mL
The gas from a certain volcano had the following composition in mole percent (that is, mole fraction multiplied by 100). 56.0% CO2, 34% H2, 5.4% HCl, 2.4% HF, 2.1% SO2, and 0.1% H2S What would be the partial pressure of each of these gases if the t..
calculate the molarity of an aqueous naoh solution if 32 ml of it is required to titrate .6789 grams of oxalic acid to
Explain how the assigned BRCA1 mutation would alter the BRCA1 protein. Describe two ways PCR is similar to or different from DNA replication in the cell. Explain how the client could have inherited a BRCA1 mutation from her paternal grandmother.
Diethylamine, (C2H5)2NH, is a weak base (pKb=3.16 at 25oC). What is the pH of 0.155 mol/L (C2H5)2NH(aq) at 25oC? Give your answer accurate to two decimal places.
the initial volume of a gas cylinder is 750.0 ml. if the pressure of a gas inside the cylinder changes from 840.0 mmhg
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