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Balance the following equation in acidic solution: H2S(g) + NO3-(aq) ? S8(s) + NO(g) What is the coefficient of water?
If a portion of a tablet weighing 0.365g neutralizes 2.30 x 10 -4 moles of hydrochloric acid, how much acid would the whole tablet neutralize if it weighs 1.84g
N2O4 is introduced into an empty 2.14L container, what are the partial pressures of NO2 and N2O4 after equilibrium has been achieved at 45 degree celsius? Pn2o4, Pno2=?
Assume three significant figures and an average wavelength of 504 nm for solar radiation. A green leaf has a surface area of 2.00 cm^2
What is the molarity of acetic acid, CH3COOH (MM= 60.0) in vinegar if a 5.00mL sample of vinegar requires 22.50mL of a 0.195M NaOH solution to neutralize it?
What is the millimolar concentration of dissolved oxygen for a lake or stream under the partial pressure of oxygen and a temperature of 12?
The volume of 0.100 mol of helium gas at 27 degree Celsius is increased isothermally from 2.00 L to 5.00 L. Assuming the gas to be ideal, calculate the entropy change for the process.
what is the final temperature of A metal sample weighing 34.526 g was heated to 98.0 degrees Celcius then quickly transferred into a styrofoam cup calorimeter containing 74.365 g of distilled water at a temperature of 27.0 degrees celcius.
A sample of sodium reacts completely with 0.497 kg of chlorine, forming 819 g of sodium chloride. What mass of sodium reacted
how many milliliters of 0.2 M KOH are required to titrate completely 650 ml of 0.05 M citric acid
A 25.0 g sample of garden compost was analyzed for chloride content. The sample was dissolved in water and the chloride was precipitated as silver chloride. 1.58 g of dried precipitate was obtained. Calculate the percent chloride in the sample
A 32.0 g sample of liquid water at 21.0C absorbs 2276 J of heat energy. What will be the final temperature of the water? The specific heat of liquid water is 4.185 J/gC.
The initial DO of the mix is 9.0 mg/L. After 5 days, the DO is 4.0 mg/L. After a long period of time, the DO is 2.0 mg/L, and it no longer seems to be dropping. Assume nitrification has been inhibited so the only BOD being measured is carbonaceous..
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