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How is the equivalent weight of a cation found? Is it the molecularweight divided by the number of equivalents? And how do youdetermine how many equivalents are in a cation or anion? For example What is the equivalent weight of NA+ ,Mg2+, and SO42-?
Calculate the change in its standard molar Gibbs free energy when benzene is heated from 25 ºC to 45 ºC.
Ammonium ferric sulfate dodecahydrate (NH4Fe(SO4)2 • 12 H2O) is synthesized via the two step process shown below. In the first step an acidic solution of iron (II) ions are oxidized to iron (III) ions with nitric acid.
if 836.8 Joules are added to 25 grams ammonia at 37 degrees Celsius, what will the final temperature be?
Use the folowing data to calculate (a) the molar concentration of B in (i) water, (ii) benzene, (b) the molality of B in (i) water, (ii) benzene.
If 85 J of heat are added to a pure gold coin with a mass of 15g , What is its temperature change? Specific heat capacity of gold is 0.128.
From the data below, calculate the standard entropy change for the following reaction at 25oC: CaCl2(s) ---> Ca(s) + Cl2(g). Compound H (kJ/mol) So(J/mol-K)
Atkin's Physical Chemistry 9th edition. 10.14a. The ionization energy of Xe5p and F2p electrons are 12.1eV and 17.4 eV, respectively. Calculate the energies and composition of the bonding and antibonding orbitals of XeF. Use beta=-1.5eV and S=0.
For a particle in a box system, by what factor do you need to change the box length to decrease the transition energy by a factor 5 for a fixed value of mass
How many milliliters of a 0.150 M magnesium hydroxide solution are needed to neutralize 1.985 L of a hydrochloric acid solution that is 0.5408 M
If a bottle of nail polish remover contains 181 g of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 g/mL
How many mL of .200 M FeCl3 are needed to react with an excess of Na2S to produce 2.75 g of Fe2S3 if the percent yield for the reaction is 65%? 3Na2S + 2FeCl3 = Fe2S3 + 6NaCl
What ions and/or molecules are present in relatively large proportions in a solution of a strong acid HI (aq)?
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