Determining the partial pressure of oxygen
A gaseous mixture of and contains 36.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 ?
Express you answer numerically in millimeters of mercury.
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A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What
When 10cm3 of a gaseous hydrocarbon CaHb was exploded with an excess of oxygen, a contraction of 35cm3 occured (all volumes are measured at rtp). On treatment of the product with NaOH solution, a contraction of 40cm3 occured. Deduce the formula of
A 40.0 mL sample of oxygen is collected by water displacement at 24.0 degrees celcius. What volume would the dry gas occupy at standard pressure if the original pressure is 98.5 kPa?
The rate constant for the reaction at 30oC is 0.120 L*mol-1*s-1. How long does it take an initial concentration of 0.150 mol/L to reduce to one-quarter the initial concentration?
The mixture of hot iron and aluminum is then dropped into 96.0 g of water at 20.7°C. Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
A student reported the following % for his unknown mixture: 25% NH4Cl, 30% NaCl, and 50% SiO2. Assuming that the calculations were done correctly, explain the students error.
If 18.4 mL of 0.800 M~rm HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
With this, and assuming a space crew of five, how much LiOH must be taken in a seven day mission? Take into consideration a safety factor of 200%.
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