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The ideal gas law describes the relationship among the pressure P, volume V, number of moles n, and absolute temperature T of an ideal gas. Here is the relationship expressed mathematically: PV=nRT where R is a proportionality constant. The units of R are determined by the units of pressure and volume used in the equation. When atm is used for pressure and L for volume, the appropriate R value is 0.0821 L⋅atm/mol⋅K. How many air molecules are in a 14.0×12.0×10.0 ft room? Assume atmospheric pressure of 1.00 atm, a room temperature of 20.0 °C, and ideal behavior. Volume conversion:There are 28.2 liters in one cubic foot.
a 150.0-g sample of metal at 80.0degc is added to 150.0 g of h2o at 20.0degc. the temperature rises to23.3degc.
explain why the swirling of a solution and its drying agent hastens the drying
write the balanced neutralization reaction between sulfuric acid and potassium hydroxide in aqueous solution.
a solid block of exactly 100.0 cm3 has a mass of 153.6g. Determine its density. will the block sink or float in water
What is the pH of a solution prepared by mixing 50.0 mL of 0.10 M methylamine, CH3NH2, with 20.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl
How many grams of dry need to be added to 2.50 of a 0.700 solution of ammonia, , to prepare a buffer solution that has a of 8.65. for ammonia is.
question a person ate 0.941 pound of cheese an energy intake of 7530 kj. suppose that none of the energy was stored in
the instruction booklet for your pressure cooker indicates that its highest setting is 12.5 . you know that standard
It takes 1.35 kJ of energy to heat a sample of pure silver from 12.0°C to 15.5°C. Calculate the mass of the sample of silver.
The polymerization of styrene to polystyrene can also be catalyzed by benzoyl peroxide. Write the equation for this reaction showing at least three units of the polymer.
Calculate the rpoportion of I2 (iodine) molecules in their ground state, first excited stated
Explain in detail the observed absorption maxima (from the UV-vis spectrum) for the following compounds:
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