General Chemistry Answers

. How many grams of sulfuric acid, H2SO4, can be obtained from 457 grams of iron ore if the ore is 73.0% by mass FeS? The reactions involved are given below. Reactions happen with the yield of 90.0%, 82.0% and 92.5% respectively 4 FeS + 7O2 → 2 Fe2O3 + 4 SO2 2 SO2 + O2 → 2 SO3 SO3 + H2O → H2SO4 

. How many grams of sulfuric acid, H2SO4, can be obtained from 457 grams of iron ore if the ore is 73.0% by mass FeS? The reactions involved are given below. Reactions happen with the yield of 90.0%, 82.0% and 92.5% respectively 4 FeS + 7O2 → 2 Fe2O3 + 4 SO2 2 SO2 + O2 → 2 SO3 SO3 + H2O → H2SO4 

Phosphoric acid can be prepared from phosphorus triiodide according to the reaction:

    Pl₃ (s)  +  H₂O(l) -----------> H₃PO₃(aq) + HI(g)

If 150 g of PI₃ (MM = 411.7 g/mol) is added to 250 mL of H₂O (g/mol), d = 1.00 g/mL), Identify which will be limiting and excess reagents. ( How many grams of H₃PO₃ (MM = 97.99 g/mol) will be produced theoretically?

Phosphoric acid can be prepared from phosphorus triiodide according to the reaction:

    Pl₃ (s)  +  H₂O(l) -----------> H₃PO₃(aq) + HI(g)

If 150 g of PI₃ (MM = 411.7 g/mol) is added to 250 mL of H₂O (g/mol), d = 1.00 g/mL), Identify which will be limiting and excess reagents.

How many grams of H₃PO₃ (MM = 97.99 g/mol) will be produced theoretically?

Phosphoric acid can be prepared from phosphorus triiodide according to the reaction:

    Pl₃ (s)  +  H₂O(l) -----------> H₃PO₃(aq) + HI(g)

If 150 g of PI₃ (MM = 411.7 g/mol) is added to 250 mL of H₂O (g/mol), d = 1.00 g/mL), Identify which will be limiting and excess reagents. 

What factors that can interfere the stock solution preparation?

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if 2000 mg of nano2 is dissolved in 2000 ml of distilled water, what is the concentration of no - in this solution in ppm?

Directions: Try to determine which column exerts greater partial pressure is greater by putting E on the blank if the column on the left is greater than the column on the right and putting Z on the blank if the column on the right is greater than the column on the left. 1. Ptotal = 0.83 atm Ptotal = 0.95 atm

X1 = 0.23 X2 = 0.19

Ptotal = 14 psi Ptotal = 10 psi

2. n1 = 0.2 mol n2 = 12 mol

ntotal = 0.3 mol ntotal = 16 mol

3. Ptotal = 20 kPa Ptotal = 0.95 atm

X1 = 0.87 X2 = 0.19

Ptotal = 101 kPa Ptotal = 110 kPa

4. n1 = 0.4 mol n2 = 5 mol

ntotal = 1.2 mol ntotal = 14 mol

Ptotal = 1.2 atm Ptotal = 110 kPa

5. n1 = 0.4 mol n2 = 5 mol

ntotal = 1.2 mol ntotal = 14 mol

6. Ptotal = 2.3 atm Ptotal = 3.4 atm

X1 = 0.23 X2 = 0.19

7. Ptotal = 0.83 atm Ptotal = 19 psi

X1 = 0.23 X2 = 0.19

Ptotal = 202 kPa Ptotal = 30 psi

8. n1 = 0.4 mol n2 = 5 mol

ntotal = 1.2 mol ntotal = 14 mol

9. Ptotal = 1.2 atm Ptotal = 3.4 atm

X1 = 0.5 X2 = 0.2

10. Ptotal = 6 MPa Ptotal = 5.3 MPa

X1 = 0.6 X2 = 0.5

The reaction of carbon disulfide with chlorine is as follows: CS2 (g) + 3 Cl2 (g) ⇋ CCl4 (g) + S2Cl2 (g) H = -238 kJ Predict the effect of the following changes to the system on the direction of equilibrium. a. The pressure on the system is doubled by halving the volume. b. CCl4 is removed as it is generated. c. Heat is added to the system.

A hypothetical acid HA has a dissociation constant 1.8 𝑥 10ିଷ. a. Write a balanced dissociation reaction of the acid b. Write the equilibrium constant expression for the acid c. If the initial concentration of the acid is 0.5 M, determine its hydrogen ion concentration. d. Calculate the ionization constant e. Comment on the strength of the acid.