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Given that one mole of NaOH reacts exactly with one mole of potassium hydrogen phthalate, write the chemical reaction and calculate the number of milliliters of 0.100 M NaOH required to neutralize the 0.500 gram sample of potassium hydrogen phthalate.
In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 21.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142 km trip in Europe?
With Niemann-Pick Disease, discuss how lipid metabolism is affected, particularly which enzyme(s), and how the body is affected
What are the protons and neutrons that are emitted from a helium atom called? Atomic mass is expressed in atm.
Joseph Priestley prepared oxygen by heating mercury(II) oxide. The compound HgO is stable at room temperature but decomposes into its elements (Hg and O2) at high temperatures. What conclusions can be drawn concerning DH and DS for this decomposit..
a 309 ml sample of unknown hcl solution reacts completely with na2co3 to form 10.1 g co2. what was the concentration of
Calculate the number of moles of solute present in each of the following solutions: a)245 mL of 1.50 M HNO3 b) 50.0 mg of an aqueous solution tha tis 1.25 m NaCl c) 75.0 g of an aqueous solution that is 1.50% sucrose by mass
write the balanced reaction for the complete combustion f octane c8h18 and then determine how many moles of oxygen it
If Sodium hydroxoide has a H+ of 4.2 x 10^ -10, then what is its OH- , pH, and pOH. If hydrochloric acid has a pOH of 11.5, then what is its pH, OH-, and H+. If potasssium hydroxoide has a pH of 2.5, then what is its H+, OH-, and pH
The optical rotation of a sample composed only (S)-1-amino-1-phenylethane is determined. [a]obs = -157.0 degrees. If the cell path length was 1.0 dm and the concentration of (S)-1-amino-1-phenylethan in the sample was 5.2 g/mL
What is the de Broglie wavelength in cm, of a 12.7 g hummingbird flying at 1.15 multiplied by 102 mph (1 mile = 1.61 km.)
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result of its absorption
The hydrogen atom can absorb light of wavelength 2626 nm. (a) In what region of the electromagnetic spectrum is this absorption found? (b) Determine the initial and final values of n associated with this absorption. initial
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