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The boiling point of a liquid increases as the pressure above the liquid increases. In contrast to boiling food in an open pot, pressure cookers trap the steam, which raises the internal pressure, which raises the boiling point of water, causing a higher cooking temperature. A higher cooking temperature means that the food will cook faster.
The instruction booklet for your pressure cooker indicates that its highest setting is 13.4 psi . You know that standard atmospheric pressure is 14.7psi , so the booklet must mean 13.4 psi above atmospheric pressure. At what temperature in degrees Celsius will your food cook in this pressure cooker set on "high"?Express your answer numerically in degrees Celsius.
The reusable booster rocket of the U.S. space shuttle employs a mixture of aluminum and ammonium perchlorate for feul. the chemical reaction that occurs is
The following thermochemical data are for 25oC. H0f Cp H2O(l) - 286 kJ mole-1 + 75.3 joule mole-1 K-1 H+(aq) 0 0 OH-(aq) - 230 kJ mole-1 + 148 joule mole-1 K-1 For the self-ionization of water, H2O (l) H+ (aq) + OH-- (aq) What is the value of ?H..
Is a 0.15M solution of potassium benzoate C6H5COO-K+ acidic, basic, or neutral? Calculate the pH. The Kb for benzoic acid is 1.5 X 10^-10.
the earth undergoes over a specified period of time the amount of work required to build a house the heat generated by a chemical reaction carried out at constant temperature and pressure the enthalpy released by the combustion of a gallon of gaso..
what is the chemical reaction that takes place when you add calcium bromide with hg elemental mercury at 700 degree
What is the chemical make-up of natural cleaners? How do these products compare to traditional cleaners? Are the active ingredients the same or different?
A 0.366-g sample of an unknown reducing agent required 30.0 mL of 0.100 N (normality) KMnO4 for titration. What is the equivalent weight of the reducing agent?
The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20*10^-4 min-1, and the half life at 760 K is 29 min. Calculate the activation energy for this reaction.
If one cubic centimeter section of a reactor has a macroscopic fission cross section of 0.989 cm-1, and if the thermal neutron flux is 1x10^15 n/cm2 s, calculate the fission rate per cubic centimeter.
The vapor pressure of a beaker of dilute aqueous solution of sucrose at 25 degree C is 3.111 kPa. Find the activity of water in this sucrose solution, given that the vapor pressure of pure water at 25 degree C is 3.167 kPa
Calculating Rate and Activation Energy of Diffusion, a) How do I calculate the time that will it take for 0.001 moles of CO2 to leak from a container at steady-state, assuming that the amount of CO in the surroundings is insignificant?
Why does a protic solvent favor E1 over E2? I know with Sn2 a protic solvent would surround the Nu: and hinder it from attacking, but in E2 there is not a nucleophilic attack.
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