How does the law of conservation of mass apply to this reaction: c2h4+o2=h2o+co2?

Consider the formation of water molecule. Hydrogen combines with oxygen to form  a water molecule.

 

In this case, the total mass of the reactants = total mass of the products. Also, the number of atoms of hydrogen and oxygen in the reactants side and the products side are equal.

that's all I know

The healthcare professionals can take following measures in order to improve partnership between the adult patient and the provider:

Use of preventive care services: it involves cousneling of patient, regular check-ups, and screenings to prevent illness, and other health-related problems.Promoting communication: promoting communication will lead to an  institutional culture and providing health care personnel training which will prevent the ratifying and stereotyping between the adult pateints experience. It will educate both the provider and adult patient to restrict the stereotype thinking.