Предмет: Химия, автор: nelyamovchannn

CH3-CH(CH2)-CH(NH2)-COOH какая молекулярная формула?

Ответы

Автор ответа: Gortas

Молекулярная формула: C5H10N02

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: neeuyyo

Помогите пожалууйсса(((кто может

перевод из прямой речи в косвенную

"I have enjoyed the much greatly" said Tom.

Olga says:" I have something to tell you"

2 года назад

Предмет: Английский язык, автор: Valeriya555

80. The house was dirty. She … it for weeks.

A) have not cleaned

B) hasn’t cleaned

C) didn’t clean

D) hadn’t cleaned

E) don’t clean

81. When I arrived at the party, Sam … already … home.

A) has gone

B) had gone

C) had going

D) is gone

E) has been gone

82. When we came home last night, we found that somebody … our vase.

A) has broken

B) had been broken

C) had broken

D) have been broken

E) had been broking

83. Ken gave up smoking last year. He … for 20 years.

A) had been smoking

B) has been smoking

C) smoked

D) does smoke

E)has been smoked

84. We were good friends. We … each other for years.

A) knew

B) had known

A) had been knowing

B) have been knowing

C) had been known

85. I arrived at the cinema late. The film … already … .

A) has begun

B) began

C) had begun

D) begin

E) have begun

86.We felt very when we got home, so we … to bed.

A) had gone

B) had been going

C) went

D) go

E) are going

87. I was very sad when I sold my car. I … it for a very long time.

A) have had

B) had

C) have

D) am having

E) had had

88. When I arrived, all guests’ stomachs were full. They … .

A) have eaten

B) were eating

C) ate

D) had eaten

E) eat

89. Jim was on his hands and knees on the floor. He … for his contact lens.

A) had been looking

B) was looking

C) had looked

D) looked

E) looks

90. Alice woke up in the middle of the night. She … for 3 hours.

A) dream

B) has been dreaming

C) has dreamed

D) had been dreaming

E) dreams

91. Who was that man? I … never … before.

A) have seen

B) is seen

C) have been seeing

D) had been seening

E) had seen

92. Yesterday he … a phone call from Sally.

A) have had

B) had been having

C) had

D) has

E) was

93. I … never … cricket in my life.

A) had, played

B) have, been playing

C) haven’t, played

D) have, played

E) have, been playing

94. Mike had just turned the TV off. He … TV since 2 o’clock.

A) has been watching

B) had been watched

C) was watching

D) have been watching

E) had been watching

95. Ann … two brothers.

A) have got

B) has

C) have

D) had got

E) have been got

96. My sister … long hair when she was a child.

A) had

B) has

C) had got

D) have got

E) has got

97.… they …a car when they were living in London?

A) will have

B) does have

C) had got

D) do have

E) did have

98. Goodbye! I hope you … a nice time.

A) are having

B) have

C) have got

D) were having

E) had got

99. I don’t eat much food. I never … lunch.

A) have

B) have got

C) had got

D) were having

E) are having

2 года назад

Предмет: Русский язык, автор: IKarinaV

Как проверить слово предмет?

2 года назад

Предмет: Математика, автор: Любарский

245 участников формы математика и жизнь собираются на автобусную экскурсию. В каждом автобусе ехать не более 40 участников. Сколько автобусов нужно, что бы разместить всех участников форума? Запиши ответ и объясни его.

9 лет назад

Предмет: Математика, автор: angelangelina1

Турист прошёл за первый день 18 км,что составляет 6/5 пути,который он должен пройти во второй день.Сколько километров должен пройти турист за эти два дня? ПОМОГИТЕ!!!!

9 лет назад