How long does it take a person at rest to breathe
How long does it take a person at rest to breathe one mole of air if the person breathes 78.0 mL/s of air that is measured at 25 degrees Celcius and 755 mmHg?
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The heat of formation of KCl(s) is -436.7 kJ/mol and the heat of formation of KCl(aq, 1 m) is -419.5 kJ/mol. Determine the heat of solution of KCl.
When food inside the pressure cooker boils, steam is produced. Using the particle theory of matter, please explain (i) why the food inside the pressure cooker can be cooked at a very high pressure. And (ii) state two advantages of using the pressu
Lemon juice is a complex aqueous solution that does not freeze in ahome freezer at temperatures as low as -11 °C. At what temperature will the lemon juice freeze if it effective molality is the equivalent of 11.37 m glucose solution?
The mechanism for the reaction of nitrogen dioxide with carbon monoxide to form nitric oxide and carbon dioxide is thought to be:
"Glycemic index" is a popular, though controversial measurementof how quickly glucose is released from starchy foods into the blood during digestion.
Calculate the modulus of elasticity (in GPa) for the nonporousmaterial. At what volume fraction porosity will the modulus of elasticitybe 278 GPa?
Only one of each of the following pairs of reactants undergoes a reaction. Complete and balance the equation for the reaction that occurs.
An alum is a "double salt" consisting of a monovalent cation, a trivalent cation, and two sulfate ions with twelve water of hydration (waters of crystallization) as part of the crystallin structure.
What is the pH of rainwater (containing no buffering other than from water itself) if the current concentration of carbon dioxide in the atmosphere is 390 ppm. Show calculations.
30 g of steam at 100EC condenses and drops to a temperature of 70EC. How much energy is needed to cool the liquid water at 100EC to the final temperature of 70EC?
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