Sodium is Na, so there's 3 moles of that. Phosphorus is P, there's 1 mole of that. Oxygen is O, there's 4 moles of that.
Answer:
chemical change
Explanation:
burning and cooking are both chemical changes.
To calculate the average atomic mass, multiply the fraction by the mass number for each isotope, then add them together.
The answer is B cotton, since you can grow it.
