What mass of O2 will react with 400. g C4H10?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum

Why is the melting of ice a physical change ?