Какую роль играет семья в жизни общества?

По термохимическому уравнению реакции горения этанола

С2Н2ОН+3О2=2СO2+3H2O+1376 кДж

Рассчитайте количество теплоты , которое выделится при полном сжигании 9,2 г этанола.

2752 кДж

275,2 кДж

27,52 кДж

137,6 кДж

Ответ дать с решением.

Помогите, пожалуйста. очень срочно нужно

1) Express the meaning of the phrase in one word: one half of the world

1 hemisphere 2 weight 3 horizon

2)Choose the right variant: New York City is the … of a famous symbol - the Statue of Liberty.

1 home 2 basement 3 freedom

3) Find the noun that is usually uncountable in the line: boss, job, profession, employee, unemployment.

1 job 2 employee 3 unemployment

4) Choose the right variant: … parents are teachers.

1 Her two 2 Her both 3 Both her

5) Read the text and choose the right title for it: The two friends started Microsoft in 1975 and very soon it became very profitable. In fact, they built the world’s largest software business. Later Microsoft also developed such well-known programs as Windows, Excel and Internet Explorer. Bill Gates’s dream was to computerize everything - TVs, telephones, and even the way you cook dinner. Bill Gates has achieved a lot. In the process, he became one of the richest men in the world.

1 Preferences 2 Generosity 3 Success

Большое спасибо за помощь.