A pure sample of hydrocarbon (a compound that contains only hydrogen and carbon) is found to be 74.5% carbon by mass. If the molar mass of the compound is 16.05 g/mol, find its molar mass.

Select the correct answer from each drop-down menu. daniel and sanya are scientists. daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. sanya is investigating whether the discharge from industrial plants has any impact on the ph concentration of freshwater swamps in the surrounding area. which fields of science are daniel’s and sanya’s studies most closely related to? daniel’s field of study is related to science, and sanya’s field of study is related to .

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.

This drawing shows a human body system. what is the primary function of this body system?