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>> Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below.
HCl is a stronger acid than H2S because Cl is more electronegative than S.
H2SO4 is a stronger acid than H2SeO4 because S is more electronegative than Se
HIO is a stronger acid than HIO4 because it has fewer oxygens surrounding the central I atom.
HBrO2 is a stronger acid than HBrO3 because it has fewer oxygens surrounding the central Br atom.
H3PO3 is a stronger acid than H3PO4 because it has fewer oxygens surrounding the central P atom.
H2PO4- is a stronger acid than H3PO4 because it has more charge (is more unstable).
a 50 ml solution containing NaBr was treated with excess AgNo3 to precipitate 0.2146g of AgBr. what is the molarity of NaBr in the solution.
how much NaCl is present in one serving (105g ) of chips? Express your answer to three significant figures and include the appropriate units. (in grams)
What volume of ethylene glycol (C2H6O2), a nonelectrolyte, must be added to 12.7 L of water to produce an antifreeze solution with a freezing point of -34.6°C? (The density of ethylene glycol is 1.11 g/cm3, and the density of water is 1.00 g/cm3.)
What is the structure of the most abundant acylium ion (and resonance structure) that would be observed in mass spectral analysis
a 93 L sample of dry air cools from 145 degrees C to -22 degrees C while the pressure is maintained at 2.85 atm. what is the final pressure?
filtrate be used to transfer the residue when the desired product is solid
What is the ratio of the conjugate base concentration to the acid concentration, that is, [B-]/[HB] when the indicator switches to the acidic color?
Explain why cis dichloroethene has a boiling point of 60 degrees C while trans - dichloroethen has a boiling point of 48 degrees C.
Carbon sequestration technologies are being actively explored by researchers as methods to remove CO2 from the atmosphere, thereby diminishing the greenhouse effect.
draw 1-fluoropentane and predict the number of hydrogens per signal in a H-NMR spectra, and the splitting for each signal?
A solution is prepared by dissolving 246 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Calculate the equilibrium concentrations for all species: B. Calculate the value of the equilibrium constant, K.
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