2h2 + o2=2h2o how many water molecules are created when 32 grams of oxygen react completely with 4 grams of hydrogen?

1.2044 * 10^24 molecules

Explanation:

First thing's first. Let's bring out the balanced chemical equation.

So we have;

                                 2H₂      +       O₂               →   2H₂O

Number of moles:    2               :    1                  :    2

Molar mass               2 ( 2 * 1)    :     32 (2 * 16)  :   18 (2 + 16)

Reacting mass        4 ( 2* 2)      :    32 ( 1 * 32)   :   38 (18 * 2)  

Reacting mass = molar mass * number of moles

The number of moles formed when 4 grams of hydrogen reacts with 32 grams of oxygen is 2 moles.

To obtain number of molecules, multiply the number of moles by the Avogadro constant, 6.022 x 10^23.

This means; Number of Molecules = Number of moles * Avogadro's constant

Number of molecules = 2 * 6.022 * 10^23 = 12.044 * 10^23 = 1.2044 * 10^24 molecules

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:

one state would change   like louisiana to texas. thats a change

explanation: