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If a second-period diatomic molecule has 13 electrons in its valence shell (total of 2s and 2p electrons), what is the predicted bond order of the molecule?
Calculate the mg/l of carbon dioxide required to react with 35 mg/l of calcium hydroxide and the m/l of precipitate formed.
How many different tripeptides can be made from two molecules of glycine and one molecule of histidine
to calculate approximately the ability of ibuprofen to move through different tissues in the body pharmacologists
The decomposition of potassium chlorate (KClO3 ) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 24.1 mol of oxygen?
Calculate the activities of Ca2+ and F- in the solution of flourite (CaF2) in pure water at 25C without regard to possible hydrolysis.
0.55 g of hydrogen chloride (\rm HCl) is dissolved in water to make 3.0 L of solution. What is the \rm pH of the resulting hydrochloric acid solution
A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0 °C. What is the magnitude of k at 75.0 °C if Ea=49.8 kJ/mol
What is the boiling point of a solution produced by adding 510g of cane sugar (molar mass 342.3g/mol ) to 2.1kg of water. For each mole of nonvolatile solute, the boiling point of 1kg of water is raised 0.51 degrees celsius.
f seawater contains 3.5 mass % of dissolved salts, how many kilograms of salts are present in 2.2 mi^3 of seawater? (1mi = 1609m; density of seawater = 1.025g/cm^3).
calculate the concentration m of sodium ions in a solution made by diluting 70.0 ml of a 0.274 m solution of sodium
Vanillin is the substance whose aroma the human nose detects in the smallest amount. The threshold limit is 2.0 x 10^-11 g per liter of air. If the current price of 50.0 g of vanillin is $103 determine the cost to supply enough vanillin so that th..
Identify the conjugate base of each of the following compounds: HNO2, HClO, H3PO4, and NH3. Identify the conjugate acid of each of the following species: NH3, ClO2-, SO4^2-, and OH-
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