Calculate the mass ratios in which calcium carbon and oxygen are combined in the CaCO3 compound.

M CaCO3 = 100 amu = 40 amu from Ca + 12 amu from C + 16 amu * 3 from O, the ratio of elements is 40: 12: 48 = 10: 3: 12.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.