16. Решение задачи по химии №001 608
2. The half-life of the radioactive isotope 14C is 5730 years. During archaeological excavations, a tree was found, in which the content of 14C is 72% of normal. How long the tree lay in the ground, if we assume that during its growth the concentration of the 14C isotope was close to normal.
Оплата и выдача товара осуществляются через партнёрскую платформу.