The gas inside a balloon is characterized by the following measurements: pressure =725.5 mmHg; volume = 400.0 mL; temperature =16.5 C

Explanation:

The question is "What is the number of moles of gas in the balloon?"

1. Data

a) p = 725.5 mmHg

b) V = 400.0mL

c) T = 16.5ºC

d) n = ?

2. Formula

Ideal gas equation:

3. Solution

a) Conversion of units:

b) Clear n from the formula:

c) Substitute and compute:

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error