What is the molar mass of the unknow gas
A gas mixture is made by combining 7.9g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73L. What is the molar mass of the unknow gas?
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If 28.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
If 156 mL of wet H2 is collected over water at 24 degrees celcius and a barometric pressure of 737 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.3 torr.)
A helical spring of stiffness k is cut into two halves and a mass m is connected to be 0.5 s. If an identical spring is cut so that one part is one-fourth and the other part three-fourths of the original length, and the mass m is connected to the two
Using the symbol table on the right, show the LC-3 assembly language generated by a non- optimizing C compiler for each of the following C statements. (Note: "Non-optimizing" means that all variables are allocated in memory. In other words, whe
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of N2O(g) is ______kJ/mol
A buffer is made using 45.0 mL of 0.750 M HC3H5O2 and 55.0 mL of 0.700 M NaC3H5O2. What volume of 0.10 M NaOH must be added to change the pH of the original buffer solution by 2.5%? Ka for this acid is 1.3 x 10
what is the pH of a 0.100M solution of benzoic acid if ka=6.5x10-5 and the equilibrium equation of interest is : HBz(aq)+h20(l)<--->h3O+(aq)+Bz-(aq).
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