No of valence electrons
In writing the Lewis Structure, when we do not have to worry about electrons distribution in each atom alone, and when we have to assign to each atom its particular no of valence electrons?
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Calculate the mass of one atom of helium (atomic mass=1.01 amu). Calculate the wavelength of this atom if it is traveling at .8c
Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C · g.
Calculate the mass of nitrogen dissolved at room temperature in an 80.0 {rm L} home aquarium. Assume a total pressure of 1.0 {rm atm} and a mole fraction for nitrogen of 0.78.
How much heat will be released when 6.44 grams of sulfer reacts with excess oxygen according to the following equation? Is this reaction endthermic or exothermic? 2S+3O2--> 2SO3 H= -791.4kj
The total pressure in the flask was __________ atm. Assume the initial pressure in the flask was 0.00 atm and the temperature upon mixing was 25°C.
A 25.0 mL sample of 0.100 M lactic acid (HC3H5O3, pKa = 3.86) is titrated with 0.100 M NaOH solution. Calculate the pH after the addition of the following amounts of NaOH.
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