Determine the partial pressure of helium
A 265- flask contains pure helium at a pressure of 757 . A second flask with a volume of 485 contains pure argon at a pressure of 714. what is the partial pressure of helium.
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What is the percent yield of a reaction in which 298 g phosphorus trichloride reacts with excess water to form 135 g HCl and aqueous phosphorus acid (H3PO3)?
Assuming that radiation with 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 C, how many photons are necessary to raise the temperature of a 350 mL cup of wa
A zero-order reaction has a constant rate of 3.00×10^-4M/s . If after 65.0 seconds the concentration has dropped to 1.50×10^-2 M , what was the initial concentration?
Using stirling's approximations and lagrange's method of undetermined multipliers. determine the expressions for the distribution of N particles.
A lead fishing weight with a mass of 41 g absorbs 146 cal of heat. If its initial temperature is 54°C, what is its final temperature?
Calculate the amount of energy in kilojoules needed to change 243 g of water ice at -10 rm ^{circ}C to steam at 125 rm ^{circ}C. The following constants may be useful:
How many grams of NO(g) can be formed from 5.0 moles of NH3(g) if there is sufficient O2(g) to use all of the ammonia?
A solution of sodium chloride in water has a vapor pressure of 20.1 torr at 25°C. What is the mole fraction of NaCl solute particles in this solution?
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