Calculate the empirical formula of water, if a sample contains 0.6g of hydrogen and 4.8g of oxygen.

H₂O

Explanation:

Given parameters:

Mass of hydrogen  = 0.6g  

Mass of oxygen  = 4.8g

Unknown:

Empirical formula of the water  = ?

Solution:

The empirical formula is the simplest formula of a compound.

Elements                   Hydrogen                 Oxygen

Mass                               0.6                           4.8                 

Molar mass                      1                               16                      

Number of

moles                           0.6/1                         4.8/16                  

                                      0.6                             0.3                      

Divide by the

smallest                      0.6/0.3                        0.3/0.3              

                                          2                                  1    

The empirical formula is  H₂O

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

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