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The following reactionis known to occur with a percentage yield of 82.7% at roomtemperature:Zn + S --> ZnSIf a chemist produced 926.77 g. of zinc sulfide at the end of the experiment, what mass of zinc was initially placed into the reaction chamber?
Complete and balance the following equations, and identify the oxidizing and reducing agents. (Recall that O atoms in hydrogen peroxide, H2O2, have an atypical oxidation state.)
how would the molarity be affected by the followingcircumstances i.e. would it be higher than the true value lowerthan
Draw the structure(s) of the primary alcohols with the chemical formula C6H14O that have an ethyl side chain.
a mixture of methane ch4 and ethane c2h6 is stored in a container at 294 mmhg. the gases are burned in air to form co2
What will be the effect of f electrons not sheilding completely on the size and ionization of energy of mercury? Use calculations for illustration if needed
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL acid in a flask. You quickly add 20.00 mL of 0.0414 M NaOH but overshoot the end point, and the solution turns deep pink.
The final temperature of the system is 27.3°C. The resulting 0.500 M NaCl (aq) has a density of 1.02 g/ml, and a specific heat of 4.02 J/g-deg. What is the value of ?H in kJ/mole or the reaction
a flask contains 0.350 grams of liquid br bromine . calculate the number of brbromine molecules present in the flaska
how does the collision theory account for the dependance of rate on the concentration of the
If the ka for the acid phenol (call it HP) is 1.3 x 10-10, what is the pka of the phenolate ion (P-)
describe the crystal lattic structures you examined,indicating the number of positine ions surrounding each negative ion,and vice versa
a weak acid hf is in solution with dissolved sodium fluoride naf. if hcl is added which ion will react with the extra
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