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How many grams of methane gas (CH4) need to be combusted to produce 12.5 L water vapor at 301 K and 1.1 atm? CH4 (g) + 2 O2 (g) -> CO2 (g) + 2 H2O (g)
A fluorinated organic gas in a cylinder is com- pressed from an initial volume of 960 mL at 158 Pa to 478 mL at the same temperature. What is the final pressure? Answer in units of Pa.
Solid silver nitrate is added to a solution that is 0.0010 M each in NaCl, NaBr, and NaI. For AgI, ksp= 1.5x10^-16, for AgBr, ksp= 3.3x10^-13, and for AgCl, ksp= 1.8x10^-10
Propane is often used for gas grills and is typically purchased by filling a propane tank with 20 pounds of propane. What is the enthalpy change when 18 pound of propane is burned?
What is the most likely chemical explanation for the fact that butter is a solid at room temperature while olive oil is a liquid?
Calculate the volume of water required to reconstitute (also referred to as solubilize) the entire contents of the vial of ovalbumin to a final concentration of 6.1 mM.
When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.083 kJ·K-1, the temperature decreases by 0.460 K.
You are given 2.56 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.89 of aspirin. Calculate your percent yield of aspirin
what is the pH of a solution obtained by adding 3.50g of HBr to 435mL of a 0.639M solution of HNO3?
A 2.00-g sample of white solid was vaporized in a 345-mL vessel. If the vapor has a pressure of 985 mmHg at 158°C, what is the molecular mass of the solid?
Why might your sample not have the same melting range as either of the known compounds, given that it must be one of them?
How many litres of NO are produced at STP when 162 g Ag reacts with excess HNO3
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
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