General Chemistry Answers

The equation for a reaction that can be used to manufacture lithium carbonate is

2Li2O2 + 2CO2 → 2Li2CO3 + O2

What is the atom economy for this reaction?

The equation for a reaction that can be used to manufacture lithium carbonate is

2Li2O2 + 2CO2 → 2Li2CO3 + O2

What is the atom economy for this reaction?

1.     Find the enthalpy change for the reaction       (5 points)

         CS_{2 (l)}  + 3 O_{2 (g)} → CO_{2 (g)}  + 2 SO_2(g)      

When:   C(s) + O_2(g) → CO_{2 (g)}             

                       S_(s) + O_{2 (g)} → SO_2(g)              

               C_(s) + 2S(s) → CS_2(l)       

How would you prepare 4.00 x 10² mL of a 0.688 M NaOH solution, starting with a 5.70M stock solution? (2 points)

If you have 50g of Aluminum, how much cadmium (ll) chloride would you need to completely burn? What are the theoretical amounts of aluminum chloride that will be produced?

 Brass is a copper- zinc alloy. If the concentration of zinc is relatively low, the brass has a golden color and is often used for inexpensive jewelry. If a 35.0g pendant contains 1.7g of zinc, what is the % by mass of zinc in brass? *

Write a balanced chemical equation for the overall cell reaction represented as a) Fe2+/Fe3+ // MnO4 - /Mn2+ b) Cr3+/Cr2O7 2- // ClO3 - /Cl-

Sulfuryl chloride, SO2Cl2,decomposes when heated.                                                                                                                                                                                                       SO2Cl2 (g) -----> SO2 (g) + Cl2 (g)                                                                                                                                                                                                                           In an Experiment, the initial concentration of SO2Cl2 was 0.024 mol/L. If the rate constant is 2.2 x 10^-5 s^-1, what is the concentration of SO2Cl2 after 2.5 hours?

Determine the volume, in ml, of a 208.7-g sample of an alloy with density of 0.258 lb/in^3

what mass of nickel is in a 2.4 kg sample of propanol if the concentration is 20 ppb ?