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you analyze 100 kg of a gas in a tank at atmospheric pressure and find the following: CO2: 19.3% N2:72.1% O2:6.5% H2O: 2.1% what is the average molecular weight of this gas?
Calculate the concentration of each of the following solutions in mass percent. Part A - 9.15g C2H6O in 71.1g H2O, Part B - 104g KCl in 608g H2O, Part C - 36.3mg KNO3 in 2.44g H2O
not enough air is pumped into a raft to completely fill it out. the atmospheric pressure is 14.7 psi. what is the pressure of the air inside the raft?
In an adiabatic compression if one mole of an ideal gas with a Cv=5R/2, the temperature rises from 293 K to 325 K. Calculate the heat, work, change in enthalpy and change in internal energy
Calculate the mass/volume percent of a NaCl solution in which 186 g of NaCl is dissolved in enough water to give a total volume of 1.67 L
What is the molarity of Cl- in a solution made by mixing 37.5 mL of 0.100 M NaCl with 54.0 mL of 0.100 M KCl?
A calorimeter is not a perfect insulator. For a reaction that is endothermic, will the reported (delta)H be too high, too low, or unaffected if the heat exchange with the calorimeter is ignored
a student performed the nitration of benzoic acid. shehe started with 7.2 g of starting material and obtained 4.8 g of
Find the molar mass of the compound. The reezing point of benzene is 5.49 degree celcius.
Ocean currents are measured in Sverdrups (sv) where 1 sv=10^9 m^3/s. The Gulf Stream off the tip of Florida has a flow of about 35sv.
If you add a solvent called "dioxane" to water, a homogenous mixture forms. Dioxane and water have the same boiling point (100oC). How do you explain that the mixture of the two compounds shows a boiling point that is lower than the one found for ..
2c4h10 13o2 rarr 8co2 10h2othe equation shows the combustion of butane c4h10. how many moles of water can be produced
What will be the final temperature of a mixture made from equal masses of water at 24.1 C, ethanol at 37.3 C, and iron at 93.3 C? The specific heat capacities of each are: 0.449J/g C (Fe), 4.18J/g C(Water), and 2.42 J/g C (ethanol).
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