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An experiment shows that a 247 -mL gas sample has a mass of 0.436 g at a pressure of 748 mmHg and a temperature of 26 C. What is the molar mass of the gas?
a copper wire is strectched with a stress of 10ksi at 20deg C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 5ksi
Barium chromate dissolved upon treatment with nitric acid forming an orange solution. Write a net ionic equation to represent the overall reaction that occurs.
A compound contains only C, H, and N. Combustion of 31.5 mg of the compound produces 30.2 mg CO2 and 37.0 mg H2O. What is the empirical formula of the compound
A balloon of methane gas, CH4, has a temperature of - 2.0 Degrees Celsius and contains 2.35 g of the gas. What is the temperature of the gas in kelvins
A piston at 5145 torr contains a gas that occupies a volume of 4.7 L. What pressure would have to be placed on the piston to force the volume to adjust to 0.1 L
The combustion of B2H6 occurs according to the following equation. Using the enthalpies of formation, calculate the energy (kJ) released when 4.00 g of B2H6 reacts.
Explain how many molecules of carbon dioxide and water are the products of oxidation of leucine. Specify the amount for each not just the total
A 0.6745 gram sample of KHP reacts with 41.75 mL of KOH solution for complete neutralization. What is the molarity of the KOH solution? (Molecular weight of KHP = 204 g/mol. KHP has one acidic hydrogen.)
Explain which of the subsequent species are capable of hydrogen bonding among themselves
On a smoggy day in a certain city the ozone concentration was 0.54 ppm by volume. Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the temperature and pressure
Question- The turbulence Reynold number of a stoichometric n-hexane/air mixture, whose mixing time os 50 microseconds and whose large eddies have a mean size of 1 mm, exceeds 10^4 at 1000 K.
question carbon tetrachloride ccl4 and benzene c6h6 form ideal solutions. consider an equimolar solution of ccl4 and
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