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What is the band gap energy in kilojoules per mole if bule diamonds absorb orange light with a wavelength of 675nm?
a 251 mL sample of oxygen is collected over water at 25 deg C and 760 torr pressure. If the vapor pressure of water as 25 deg C is 23.8 torr, what is the pressure of the dry gas alone?
What are the molar flow rates of acetylene, carbon monoxide and hydrogen in the react or effluent? e) What is the average molecular weight of the reactor effluent?
Gas stoichiometry and Percentage of calcium carbonate in the sample
Acetylene burns in air according to the following equation. C2H2(g) + 5/2 O2(g) 2 CO2(g) + H2O(g) H0rxn = -1255.8 kJ Given that H0f of CO2(g) = -393.5 kJ/mol and H0f of H2O(g) = -241.8 kJ/mol, what is H0f of C2H2(g)
What is the empirical formula for an prganic compound whose percentage composition is 40.0% carbon
When M2S3(s) is heated in air, it is converted to MO2(s). A 4.500-g sample of M2S3(s) shows a decrease in mass of 0.209 g when it is heated in air. What is the average atomic mass of M.
For the reaction [NH3] + [H3O+] draw the conjugate acid and base products of each reaction. Also determine whether the acid-base equilibrium would lie on the left or the right.
hydrochloric acid for neutralization. A 12.0mL volume of a phosphoric acid solution requires 35.1mL of the sodium hydroxide solution for complete neutralization.
Determine which species is present in the lowest concentration in 0.10 M H3A solution?
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 13.0 oz drink from 74 degree F to 31 degree F
near the triple point t273.15k the vapor pressure of ice is given by lnp -5924t 2.72lnt-0.0072t 9.912 where p and t
Draw a chair conformer for propylcyclohexane, where the propyl group is in the equatorial position. On the same carbon (C1), show the attached H in the axial position.
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