What gives elements in a family or group similar properties? a. the same atomic mass b. the same number of protons in their nuclei c. the same number of electrons in their outer energy level d. the same number of total electrons?

What is the empirical formula for c4h8o2

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

What is the significance sodium hydroxide and hydrochloric acid