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What is the hydronium ion concentration of a 0.110 M acid solution of an acid whose ionization constant is 5.45 x 10-7?
A pure gas sample at room temperature (25 C) has an average molecular speed of 682 m/s. What is the identity of the gas.
a v 535 ml at 1.00 atm. what is the volume at 675 torr?b v 2.07 l at 110.9 kpa. what is the volume at 0.992 atm?c v
Hydrocyanic acid HCN is a weak acid Ka value is 4.0 x 10-10 what is the [H-1] in 0.10M solution of HCN
calculate the amount of the impure sample one should weigh out on the analytical balance in order to titrate 25.00 mL of a 0.1000M solution of NaOH. Use dimensional analysis.
Ammonia rapidly reacts with Hydrogen Chloride, making ammonium chloride. Calculate the number of grams of excess reactant when 3.80g of NH3 reacts with 4.20g of HCl
If the second data point occurred after a total addition of 4.00 mL of NaOH at t = 219 s, calculate the intial rate of reaction in units of M/s.
Calculate DG for the reaction CS2 +3 CL2 -> S2CL2 + CCL4 given DH =-231.1 kJ and DS= -287.6 J/k - The answer is -145.3 Kj please show work as to how they got this answer.
DNA is thought to be the chemical compound responsible for the process of heredity. A sample of DNA was found to have density 1.10 g/cm^3 and its molecular weight was estimated to be 3.04 x 10^8 g. What is the average volume occupied by one DNA mo..
Calculate q if the temperature of a 1.00 kg water bath in the surroundings increases by 1.25 Celsius degree.
When iron chloride FeCl3 is dissolved in water the solution becomes acidic. The preparation of the Fe(NO3)3 solution and the KSCN solution used 0.5 M HNO3 as the solvent instead of water. Explain why this was done.
Ammonia(NH3) rapidly reacts with HCl, making ammonium chloride(NH4Cl). Calculate the number of grams of excess reactant when 3.80g of NH3 reacts with 4.20g of HCl. Chemical equation= NH3+HCl----->NH4Cl
discuss at least three potentially hazardous features associated with concentrated sulfuric
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