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The normal respiratory rate for a human being is 15 breaths per minute. the average volume of air for each breath is 505 cm^3 at 20 degrees Celcius and 9.96*10^4 Pa. what is the volume of air at STP that an individual breathes in one day? give the answer in cubic meters. how many grams of oxygen do we breathe in each day if air is 20.5% oxygen and the density of oxygen is 1.43 g/dm^3?
determine that the temperature of your distilled water is 24.5°C. You carefully determined the mass of a clean dry beaker and found that it was 58.1884 g.
A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L.What volume would this gas occupy at 107°C and 0.789 atm?
The general molecular formula for alkanes is CnH2n+2. What is the general molecular formula for cycloalkanes with two rings
A 4.10 g nugget of pure gold absorbed 278 J of heat. What was the final temperature of the gold if the initial temperature was 25.0°C? The specific heat of gold is 0.129 J/(g·°C).
Write the correct equation for the principal B/L acid/base equilibrium reaction in 0.1 M (H4N)2So4.
if in a certain experiment over a specific time period 0.0048 mol ph3 is consumed in a 2.0-l container each second of
In an extraction involving an unknown acid and benzophenone, Dimethyl Ether, HCl, water. If the acid was incompletely extracted from the ether solution into the aqueous layer in the experiment.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced?
How many joules of heat could be produced from a 170 calorie package of crackers
What pH is needed such that the maximum [Mg^2+] is solution is 2x10^-4M given the equilibrium: Mg(OH)2(s) Mg^(2+) + 2OH^- also pK(sp)=8.3
The solubility of N2 in blood can be a serious problem (the "bends") for divers breathing compressed air (78% N2 by volume) at depths greater than 50 ft. Find the volume (in mL) of N2, measured at 25degrees celsius and 1.00 atm, released per liter..
The combustion of ethane produces carbon dioxide and steam: 2C2H6 + 7O2 --- 4CO2 +6H20 How many moles of CO2 are produces when 5.55 mol of ethane are burned in an excess of oxygen.
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