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a) how many moles of sulfur are in 23.2 g of (C3H5)2S, b) how many atoms of hydrogen are in 0.75 mol of (C3H5)2S, c) how many grams of carbon are in 4.20 x 10^23 molecules of (C3H5)2S, d) how many atoms of carbon are in 15.0 g of (C3H5)2S
What is the pH of Sodium Acetate solution before the HCL is added and after the HCL is added?
calculate the ph of the solution that is 0.20M hydrofluoric acid and 0.040 M Lithium fluoride. the Ka for hydrofluoric acid is 3.5*10^-4.
During a refueling outage, workers discover black, soft material in the reactor core (obviously a Foreign Materials Exclusion Area breech). To help identify the breech source, you are asked to determine the material
Tums calcium carbonate reactswith stomach acid ( HCI) according to the reaction below. One tablet of tums contains 500.0 mg CaCO3. If one tablet of tums is addedto 20.0 mL 0.100M HCI, how many grams of CO2 gas are produced?
If the half-life of a first-order reaction is 4.609 hours what is the instantaneous rate of the reaction in M/day when the concentration of A equals 0.251 M?
HNO3 has 2 dissociating ions whereas Al(NO3)3 has 4, which should result in a higher conductance value. Would this have something to do with aluminum nitrate being paired with water as a solid?
What is the pH of this buffer solution? (Neglect the volume change that occurs with addition of solid sodium nitrite) b.) Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
Write the balanced equation for neutralization of sulfuric acid and sodium hydroxide. How many mL of a 0.2 M solution of sodium hydroxide would be required to neutralize
When making up an unknown solution for absorption measurements, a good plain is to make up a solution that is rather on the concentrated side, measure its absorbance and compare it to the absorbance range of your standard curve. If it is higher th..
the mass of ahydrogen atom is 1, and the mass of an oxygen atom is 16 daltons,how many molecules does one mole of sugar(C12H22O11) contain?
What is the pH of a buffer that results when 0.50 mole of Na3PO4 is mixed with 0.75 mole of HCl and diluted with water to 1.00 L? The acid dissociation constants for phosphoric acid
the following standard gibbs energy of formation values in kJ/mol: CH4, 50.7; H2O, -228.6; CO2, -394.4 calculate the standard free energy change for the combustion of CH4
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