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A gas was enclosed in a rigid-walled container. The initial temperature and pressure were 52°C and 0.55 atm, respectively. If the final pressure were 2.41 atm, what was the final temperature (to 0.1 °C)?
What is the density of gallium in grams per cubic centimeter at 25 C if a 1.00 cube has a mass of 0.2133.
What mass of solid sodium formate (of MW 68.01)must be added to 115 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 4.16? Ka = 0.00018 for HCOOH.
A sample containing 2.40 {rm moles} neon gas has a volume of 8.00 {rm L}. Assume that the pressure and the temperature remain constant.
Determine the molecular formula of the compound with molar mass 336.5g mol-1 and empirical formula C 5 H 8 O?
A 100 mm diameter silicon wafer is oxidized completely. What is the thickness of the resulting SiO2 wafer? The molecular weight of Si is 28 g/mol and of SiO2 is 60 g/mol.
Multiple choice questions in Nuclear chemistry - As the temperature of a sample of a radioactive element decreases, the half-life will
Carbon-carbon single bonds in organic molecules have energies about 350 kj/mol. What is the corresponding wavelength.
What would be the effect of performing your kinetics experiments at a lower temperature than the one you used?
When 9.00 grams of Al react with an excess of H3PO4, 30.0 grams of ALPO4 are produced.What is the percentage yeild of this reaction.
Each of 2 front tire in the car is filled with a different gas. One tire contains 116g of helium, another tire has 160g of unknown gas. How many times heavier is a molecule of the unkown gas than an atom of helium.
A major oil company has used a gasoline additive called MMT to boos the octane rating of its gasoline. What is the emperical formula of MMT if it is 49.5% C, 3.2% H, 22.0% O, and 25.2% Mn.
How many grams of hydrogen are collected in a reaction where 1.92 L of hydrogen gas is collected over water at a temperature of 40C and a total pressure of 738 torr.
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