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Problem- In an X-ray photoelectron experiment, a photon of wavelength 150 pm ejects an electron from the inner shell of an atom, and it emerges with a speed of 2.14 × 107 ms?1.
1) Calculate the binding energy of the electron
Must include steps of computation of binding energy
A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s)-----> 2 Hg(l) + O2(g) delta H rxn = 181.6 kJ (a) How much heat is needed to decompose 505 g of the oxide
Aqueous hydrochloric acid reacts with zinc metal to yield hydrogen gas and aqueous zinc chloride. Write a net ionic equation for the process: 2 HCl(aq) + Zn(s) ? H2(g) + ZnCl2(aq)
demonstrating the low melting point of gallium metal 29.8degc an instructor removes a 1.00 kg sample of the metal from
Would a solution that has a molarity of 0.990 M KNO3 and a density of 0.988 g/mL be considered unsaturated, saturated, or supersaturated?
Molecule size: The larger the electron cloud around the molecule, the greater the dispersion forces. The length of the carbon chain among similarly branched hydrocarbons can be used to assess this factor.
one of the most important enzymes in the world is nitrgoenase the plant protein that catalyzes nitrogen fixation. the
Individual bonds in a molecule are often polar, molecules as a whole also often are polar because of the ne tsum of individual bond polarities. Which of the following molecules is/are polar? SF4, CCl4, C2H2.
question a chemical reaction takes place inside of a simple constant pressure calorimeter that contains 100g of water.
If the boiling point of benzene is 81 degrees Celsius. Explain what is the vapor pressure of benzene at this temperature
complete the following calculation: a student wants to react mg(s) with 100ml of 1.5M hcl, but the intent is to have all the mg(s) react, while leaving 50% of the Hcl unreacted.
How much heat in kilojoules is evolved in converting 1.50 mole of steam at 150 deg celsiys to ice at -35.0 deg. celsius? The heat capacity of steam is 1.84 J/g. deg celsius.
if the solubility of a gas is 7.5 gl at 404 kpa pressure what is the solubility of the gas when the pressure is 202
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