Physics. 9-11 grades. Collection of calculation problems

The manual is intended for the development and improvement of the skills of solving chemical problems. It will help students systematize the studied material, eliminate possible gaps, and also prepare qualitatively for VPR, OGE and the exam in chemistry.
The book contains five chapters: standard (formal) calculations, typical calculations on reactions equations, complex tasks, tasks for determining the formulas of substances, the speed of chemical reactions, chemical balance. In total, there are more than 370 tasks with answers and solutions and 70 examples of execution of tasks. The book presents the tasks of a wide spectrum and various levels of complexity, which will allow students to be prepared for any changes in the format and content of tasks.
The manual will be useful to students of grades 9-11 for independent work and classes with a teacher to prepare for the exam, OGE and VPR, to teachers-to organize the learning, training, conducting control and verification work, including remotely .
3rd edition of supplemented