Предмет: Физика, автор: Goebbels1

1,2,3 детально пожалуйста , для зачёта , спасибо заранее за ответ!

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Ответы

Автор ответа: nagornovaksu2006

Ответ:

1. 113,64 молей

2. 1 атм

3. Не могу помочь

Объяснение:

1. n(CO2)=m/M=5000/44=113,64 молей, где m-масса вещества, M-молярная масса вещества.

2. Используем закон Бойля-Мариотта

p1*V1=p2*V2

p1=(p2*V2)/V1

p1 =(p1+Δp)*(V₂/V₁), где Δp-изменение давления

p1 =(p1+1)*(5/10)

p1=0,5*p1+0,5

0,5p1=0,5

p1=1 атм

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Serena could tell from the scary look on Blair’s face that the news was not good. She didn’t know what to say. “Urn, I got a place … um … everywhere?”

Blair stared at the acceptance letters in Serena’s hands. On top was a cream-coloured letter with the blue Yale University letterhead. “Wait, you applied to Yale?” asked Blair.

“Yes,” Serena nodded. (to nod – кивнуть головой). “At the last minute I just decided, why not, you know?”

“And you got a place?”

Serena nodded again. “Sorry.”

3. The way Blair was looking at her was making Serena nervous. What did Serena have that she didn’t? She was in the top of her class at school and look every AP (the Advance Placement Program – программа продвинутого обучения по программе высшего учебного заведения) course they offered. She was the best at the SAT. She did charity work. She was the leader of the French club. She was an excellent tennis player. Her entire high-school career – practically her whole life – she’d been working toward entering Yale. Her father had gone there. His father had gone there. Her great-uncle had donated two buildings and a playing field. Serena took no APs at all, and did only a few extracurricular activities. Serena’s dad had gone to Princeton and Brown, two of Yale’s biggest competitors. (a competitor – противник, конкурент). Still, Yale had accepted Serena and put Blair on their wait list!

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Serena stared at her for a moment her eyes wide with surprise. “That’s not so bad,” Serena said. “I’m sure Yale is hard to enter. And if you didn’t enter, at least you have backup (запас, резерв).”

Ex. 2. For questions 1-7 find the correct answers. Prove your choice using the words and phrases from the text.

1. After reading the letter it was clear that Serena got a place

a) at all universities she had applied to.

b) only at Yale University.

c) at seven different universities.

2. Blait got a place

a) at five universities she had applied to.

b) at one university.

c) at two universities.

3. In her class Blair

a) was a leader.

b) was the best student.

c) won the tennis tournament.

4. Blair’s dream was

a) to enter Yale University.

b) to work at Yale.

c) to got to Yale with her father.

5. Serena got a place at Yale because

a) her school results were good enough.

b) her great-uncle had donated two buildings and a playing field.

c) her father studied at Yale.

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a) that she had no chance to get into the university.

b) that she had a small chance to get into the university.

c) that she shouldn’t apply to Yale.

7. According to the test the word “safety” in paragraph 5 probably means

a) a place where there is no danger.

b) something that Blair had been saving for a long time.

c) a place Blair was sure to get in.

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1. On the bed between the two girls were some letters, which were laid face-down so that they couldn’t see return addresses. Blair got seven letters and five letters were Serena’s. “Okay. Ready?” Serena asked.

Blair closed her eyes and took the first letter. “Okay. Let’s do it.”

2. Blair looked at Serena. “How’d you do?” she asked.

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Blair stared at the acceptance letters in Serena’s hands. On top was a cream-coloured letter with the blue Yale University letterhead. “Wait, you applied to Yale?” asked Blair.

“Yes,” Serena nodded. (to nod – кивнуть головой). “At the last minute I just decided, why not, you know?”

“And you got a place?”

Serena nodded again. “Sorry.”

3. The way Blair was looking at her was making Serena nervous. What did Serena have that she didn’t? She was in the top of her class at school and look every AP (the Advance Placement Program – программа продвинутого обучения по программе высшего учебного заведения) course they offered. She was the best at the SAT. She did charity work. She was the leader of the French club. She was an excellent tennis player. Her entire high-school career – practically her whole life – she’d been working toward entering Yale. Her father had gone there. His father had gone there. Her great-uncle had donated two buildings and a playing field. Serena took no APs at all, and did only a few extracurricular activities. Serena’s dad had gone to Princeton and Brown, two of Yale’s biggest competitors. (a competitor – противник, конкурент). Still, Yale had accepted Serena and put Blair on their wait list!

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5. So Serena got into Yale, but she didn’t even really want to go there. Serena collected her lettes and held them behind her back.

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обратный адрес (§1)

письмо о принятии (в университет, на работу) (§2)

шапка на фирменном бланке (§2)

обращаться с просьбой, (письменным) заявлением (о приеме на работу, учебу) (§2)

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1. After reading the letter it was clear that Serena got a place

a) at all universities she had applied to.

b) only at Yale University.

c) at seven different universities.

2. Blait got a place

a) at five universities she had applied to.

b) at one university.

c) at two universities.

3. In her class Blair

a) was a leader.

b) was the best student.

c) won the tennis tournament.

4. Blair’s dream was

a) to enter Yale University.

b) to work at Yale.

c) to got to Yale with her father.

5. Serena got a place at Yale because

a) her school results were good enough.

b) her great-uncle had donated two buildings and a playing field.

c) her father studied at Yale.

6. The letter from Yale told Blair

a) that she had no chance to get into the university.

b) that she had a small chance to get into the university.

c) that she shouldn’t apply to Yale.

7. According to the test the word “safety” in paragraph 5 probably means

a) a place where there is no danger.

b) something that Blair had been saving for a long time.

c) a place Blair was sure to get in.

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