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Explain for which of the following species is resonance an important property: HONO, HONO2, N3-, NO2-, NO2
which of the following accounts for the unusually high boiling point of water? the density of water, the hydrogen bonds in water
Ethylene glycol, HOCH2CH2OH, is effective as an antifreeze, but it also raises the boiling temperature of automobile coolant, which helps prevent loss of coolant when the weather is hot. a. What is the freezing point of a 50.0% solution of ethylen..
What mass of sodium chloride would need to be added to the blood to bring the sodium ion concentration up to 0.138 M, assuming no change in blood volume?
A solution is made by dissolving 0.100 mols of NaOCl in 100.0 mL of water. The Ka of hypochlorous acid (HClO) is 3.0*10^-8 at 25.0 degrees C.
Which lists the 4 ions present in a dilute solution of H2SO4 in order of increasing concentration? why?
Zn(s) + 2 HCl(aq) → H2(g) + ZnCl2(aq) If 1.26 L of H2 gas are formed at STP, how many g of HCl reacted?
If 3.00 moles of ZnS are combined with 4.00 moles of O2, how many moles of ZnO can be produced?
How much heat is required to warm 1.20 kg of sand from 26.0 0C to 100.0 0C?
Understanding the high-temperature behavior of nitrogen oxides is essential for controlling pollution generated in automobile engines. The decomposition of nitric oxide (NO) to N2 and O2 is second order with a rate constant of 0.0796 M?
What is the percent yield of a reaction in which 216 g phosphorus trichloride reacts with excess water to form 134 g HCl and aqueous phosphorus acid (H3PO3)
The half-life of a certain radioactive element is 1250 years. What percent of the atoms remain after 7500 years?
You have 500 mL of a 5.0 M solution of nitric acid HNO3 (63.01 g /?mol) dissolved in water. How many grams of nitrogen does the solution contain.
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