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What is the electron configuration of the oxygen ion (O )?
Assume that 50.0 milligrams of a radioisotope were produced. Define what mass of this material would stay after 45 minutes if this radioisotope has a half-life of 15 minutes.
How many grams of hydrogen are required to completely saturate 75g of oleic acid, C18H34O2, which has one double bond
Determine the percent by mass of all elements in the compound sodium carbonate decahydrate better known as washing soda.
the partial pressure of o2 in air at sea level is 0.21 atm. using henrys law calculate the molar concentration of o2 in
Given the following information for element X, identify the element group in the periodic table: the electron affinity is positive; the 1st ionization energy is less than the 2nd and 3rd ionization energies and is much less than the 4th ionization..
During normal grain growth, grain boundaries tend to move toward the center of curvature so that small grains get smaller at the expense of larger grains. During recrystallization, however, the opposite is true
what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 361 K?
A sample of an element has a volume of 81 mL and a density of 1.73 g/mL. What is the mass in grams of the sample (round to the nearest tenth)?
Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 10.0 torr at 35 °C. The vapor pressure of pure ethanol at 35 °C is 1.00 × 10^2 torr.
Determine the volume of a 0.550 M KMnO4 solution required to completely react with 2.70 g of Zn.
a mixture of 1.374 g of h2 and 70.31 g of br2 is heated in a 2.00-l flask at 700 k. the following equilibrium is
Subsequent to cleavage of the bond between Arg-15 and Ile-16, Ile-16 forms a salt bridge with Asp-194. Highlight the functional groups that participate in the salt bridge. Highlight merely the atoms of the functional groups.
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