Яка кількість теплоти потрібна , щоб розплавити 500кг міді нагрвтої до температури плавлення?Питома теплоти плавлення міді 213 кДж/кг ​

1. I take a pen and a pencil. 2. That man studies Geology. 3. His friends take plans. 4. I see the maps. 5. Take my bag. 6.  Put it in my maps. 7. Put it on the table. 8. Give me a black pencil. 9. Open the box. 10. He opens the boxes. 11 Let that men take the box. 12. Let me take an apple. 13. Nick takes his maps and puts them in the bag. 14. Put that notebook on the table. 15. Helen gives me a good bag. 16. We see a woman. 17. I see five children. 18. A child puts his notebooks and pencils in the bag. 19. The children study well. 20. They study mathematics.