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Explain how many molecules of H2S are required to form 79.0 g of sulfur according to the subsequent reaction? Presume excess SO2.
2 H2S(g) + SO2(g) ? 3 S(s) + 2H2O(l)
9.89 × 1023 molecules H2S
5.06 × 1025 molecules H2S
2.44 × 1023 molecules H2S
1.48 × 1024 molecules H2S
3.17 × 1025 molecules H2S
the degradation of limestone by acidic rainwater follows 1st order kinetics with a t12 of 4500 days. calculate the
Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone.
A solution is made by dissolving 0.45 moles of LiCl to make 150 mL of aqueous solution. What is the molarity of the solution?
A compound having a specific rotation of [?] = +40.3° has been isolated and purified. This information indicates that the natural compound: a. is racemic. b. does not rotate plane-polarized light. c. is levorotatory. d. is dextrorotatory
The small bubbles that form on the bottom of a water pot that isbeing heated (before boiling) are due to dissolved air coming outof solution.
Determine the volume of the gas at a pressure of 150.0 kPa and a 26 degree Celsius of temperature?
A sample of pure NO2 is heated to 338 degrees C at which temperature it partially dissociates according to the equation
Explain in your own words what consitutes a buffer solution. Then explain how this solution resists changes in pH when strong acids or strong bases are added to it.
If a sodium hydroxide solution were added to a solution containing lead(II) ions, sodium ions, nickel(II) ions and potassium ions, which ion(s) would remain in the supernatant?
A mass of mercury occupies 0.950 L. What volume would an equal mass of ethanol occupy? The density of mercury is and the density of ethanol is 0.789 g/mL.
This solution is allowed to cool to room temperature and then placed in an ice bath. What is the theoretical maximum percent recovery
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
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