Bài 20: Một kg không khí có trạng thái ban đầu p1 = 6 bar, t1 = 25 0C. Sau khi giãn nở đoạn nhiệt thể tích tăng lên hai lần. Hãy xác định:
(a. Biểu diễn quá trình lên đồ thị p-v và T - s)
(b. Các thông số trạng thái cuối)
(c. Công kỹ giãn nỡ và công kỹ thuật)
(d. Độ biến thiên entanpi, độ biến thiên nội năng)

Asapembassies differ from consulates in thata) compared to a consulate, an embassy is a smaller representation of a nation's government in a foreign country. b) consulates are permanent diplomatic missions generally located in a country’s capital, whereas a country may have a number of embassies in various cities. c) embassies are permanent diplomatic missions generally located in a country’s capital, whereas a country may have a number of consulates in various cities. d) embassies deal solely with economic diplomacy and trade relations, whereas consulates deal primarily with political and diplomatic relations with the host nation. e) countries establish embassies in another nation only if it recognizes the sovereignty of that country, whereas consulates exist without regard to recognition of a nation's sovereignty.