General Chemistry Answers

1. What is the mass, in grams, of 3.50 x 10-3 mol of aluminum sulfate?

1. Your lab experiment requires 30.5 g of lead (ii)nitrate to prepare 525 ml of solution. 
2. What are the concentrations of led ions and nitrate ions in the solution?
3. If the solution is mixed with 100 ml of a 0.250 M sodium phosphate solution, what is the concentration of the dissolved product sodium nitrate, and the mass of lead(ii) phosphate? 

The molar heat capacity of a gas is given in the table below: T(K) 373 29.19 473 29.29 573 29.46 673 29.68 773 29.97 873 30.27 973 30.56 c_{D} (J/mol.K) a) Fit a 2 ^ (nd) order polynomial to the data to find c_{p} as a function of Temperature. Use the Cramer's Rule to solve the equations. Show all steps. b) Find the value of the heat capacity at 625 K using the equation derived in part a.

How many grams of iron (III) oxide are produced from 45.0 L of oxygen gas?

find the percentage of anhydrous salt and water of hydration in CuSo4 . 5H2O

There are 11.7 g of ethane and 30.5 g of oxygen that will undergo combustion.

Suggest why barium reacts with dilute hydrochloric acid but appears not to react with dilute sulphuric acid.

A 7.547 g fuel which has a heating value of 33 kJ/kg is burned in a calorimeter and initially at 25.00 degC. Upon triggering the temperature become 28.50 degC.

what is the delta t of the calorimeter?

How many moles are in Fe

1. What is the concentration, in g/mL, of a solution made by dissolving 75.0 g of phosphoric acid in 50.0 mL of solution?
2. What mass of NaCl is needed to produce 500 mL of a 2.0 mol/L solution?
3. What is the molarity of a solution that contains 0.350 g of barium fluoride, BaF₂, in 0.50 L of solution?
4. What is the molar concentration of a solution containing 10.0 g of NaOH in 250 mL of solution?
5. What mass of silver nitrate, AgNO₃, is needed to make 0.50 L of a 0.10 mol/L solution?
6. What volume of 1.0 mol/L solution of CuS can be made from 23.9 g of CuS?
7. A 100 mL sample of a 6.0 mol/L solution of H₂SO₄ is diluted to a final volume of 500 mL. What is the concentration of the diluted solution?
8. What volume of a 6.0 M NaOH solution is needed to produce 3.0 L of a 0.1 M solution?
9. Explain the steps you would follow to make 500 mL of a 0.5 mol/L solution of sodium chloride (NaCl) in the lab.