Al + FeO ⇒ Al2O3 + Fe Step one: balance equation:

Please answer the following in number only; example, 4

What is the coefficient for Al?

What is the coefficient for FeO?

What is the coefficient for Al2O3?

What is the coefficient for Fe?

Step two: find the molar mass

What is the molar mass of FeO?

What is the molar mass of Al2O3?

Step three: Calculation

How many grams of Al2O3 is extracted from 250. g of FeO?

- decrease the number of plants and animals living in the water.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole