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A mixture of gases contains 0.34 mole CH4, 0.37 mole C2H6, and 0.48 mole C3H8. The total pressure is 1.50 atm. Calculate the partial pressures of the gases. PCH4 atm PC2H6, atm PC3H8 atm
What is the basic structure of phosphatidyl cholines and how do they work as emulsifiers? Why is there so much research interest in phosphatidyl cholines and similar compounds in heart research?
A gaseous fuel mixture stored at 745mmHg and 298 K contains only methane CH4 and propane C3H8. When 11.5L of this fuel mixture is burned, it produces 774kJ of heat. What is the mole fraction of methane in the mixture
Draw a circuit diagram that subtracts two inputs signals and then amplifies the subtracted signal
Write the chemical equation for the formation of CH from H and C atoms. Lone pairs do not need to be included. Then Using the table of bond energies determine the ?H for the above reaction.
the formation of nylon-6,10 from sebacoyl chloride, 1,6-hexanediamine and sodium hydroxide.
The reaction is thought to follow second order kinetics which follows the relationship 1/[A]=1/[A]0+kt where [A] is the molarity at time, t, and [A]0 is the initial concentration.
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
bring 5ml of bromophenol blue to your work station. obtain a P20 Pipetman and record below the digits you see in the window on the side. What volume is the micropipette set to deliver
A weak acid (HA) has a pKa of 4.904. If a solution of this acid has a pH of 4.356, what percentage of the acid is NOT ionized
0431 moles of sucrose (a sugar with a MW of 342 g/mol) are dissolved in 400.0 g of water. The solution density is 1.013 g/mL and you can assume that the density of pure water is 1.00 g/mL. What is the molality of this solution
Use the values of Ka1 = 0.056 and Ka2 = 5.4 x 10-5 to calculate the [OH-] in a 0.898 M solution of oxalic acid (H2C2O4).
A chemist ran the reaction and obtained 5.05g of ethyl butyrate. What was the percent yield
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