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If you dissolve equal amounts (moles) of nitric acid and nitrous acid in water, the dissolved HNO3 raises the boiling point of the water almost twice as much as the dissolved HNO2. Explain
a) what molecular level phenomena cause the boiling point to be raised in both cases, and
b) why the effect is greater for HNO3.
1. How large (in kg) an oxygen candle (KClO3) would be needed to supply 8 people with enough oxygen for 24 hours on a small submarine. The average person needs .84 kg of O2 per day.
From each pair below, select the molecule that will display stronger intermolecular dipole-dipole forces in a sample of the pure substance.
Infrared Spectroscopy Lab 1) Why must a sample for IR be dry. 2) How will the spectrum be affected if a background scan is omitted or improperly obtained. 3) The stretching from C-C single bonds is virtually invisible to IR . Why
Calculate the sulfide ion concentration in a saturated solution of hydrogen sulfide with a pH of 0.85. Assume that [H2S]=0.10 mol/L in a saturated solution. Write the overall, balanced net ionic equation for the ionization of hydrogen sulfide
at 760 k 15 of a sample of cyclopropane changes to propene in 6.8 min. what is the half-life of cyclopropane at 760
The following data were obtained when measuring the delta H of neutralization for the reaction of HCl with NaOH.
When an external pressure of 2.00 is applied to the wire, the gas compresses from 5.90 to 2.95 . When the external pressure is increased to 2.50 , the gas further compresses from 2.95 to 2.36.
how many grams of KOH are present in 32.5mL of a 6.42 M KOH solution
select (a) best and (b) poorest electrical conductors from the following solutions and explain the reason for your choices: 0.10 M NH3, 0.10 M NaCl, 0.10 M CH3OOH(acatic acid), 0.10 M CH3CH2OH(ethanol)
the solubility of oxygen in water at 25 degree celsius and 1.00 atm pressure is 0.041g/L. what is the solubility of oxygen in water at 6 atm pressure?
a 35.0-ml sample of 0.20 m lioh is titrated with 0.25 m hcl. what is the ph of the solution after 23.0 ml of hcl have
Consider the reaction, 2 Al(OH)3 + 3 H2SO4 ->Al2(SO4)3 + 6 H2O. How many grams of Al2(SO4)3 are generated when 152 g of H2SO4 reacts?
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