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An initial reaction mixture contains 9.42 g of Fe and 8.50 g of S. The following reaction occurs:
Fe(s) + S(s) → FeS(s)
a) Calculate the theoretical yield of FeS.
b) How much of the excess reactant remains unreacted?
Pure water is at equilibrium with excess CaCO3 (s) and MgCO3 (s). If the water has a pH of 8.61 and is open to the atmosphere (CO2 = 390 ppmv), calculate [Ca2+] and [Mg2+]. (for MgCO3 (s), pKs = 7.45)
A sample of gas has a mass of 0.565 . Its volume is 119 at a temperature of 80 and a pressure of 746 . Find the molar mass of the gas.
Identify the major attractive force between each of the following atoms or molecules: a) He; b) HBr; c) SnH4; d) CH3-CH2-CH2-OH.
Draw the structure of the product(s) of the reaction between (R)-3-phenylbutan-2-one and ethylmagnesium bromide, followed by acidification. Use wedge and dash bonds to indicate stereochemistry.
what concentration of aqueous nh3 is necessary to just start precipitation of mnoh2 from a 0.020 m solution of mnso4?
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction
when silver nitrate reacts with zinc chloride silver chloride and zinc nitrate are formed. if you react 2.22 g of
Draw the molecule by placing atoms on the grid and connecting them with bonds. If there is more than one answer, draw all o
Br2 and ICl have similar molecular weights which compund has a higher boiling point specifically expalin your answer
Forecast how the total pressure varies during the gas-phase reaction N2 (g) + 3 H2(g) = 2 NH3 (g) in a constant-volume container
What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 30.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive. Ka = 1.8 × 10-5 for CH3CO2H.
The atomic weight of a newly discovered el- ement is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a per- cent abundance of 41.7%. What is the mass of the second isotope?
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