A component of protein called serine has a percent composition as follows. Calculate the empirical formula.
C = 34.95 % H=6.844 % 0 = 46.56 % N= 13.59 %

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)

Compare and contrast physical changes with chemical changes.

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?