Вопрос школьника по предмету Химия
Допоможіть будь-ласка.
Внаслідок дегідратаціі етилового спирту отримали етилен, який використали для синтезу 216 кг поліетилену із ступенем полімеризації 4. Обчислити об’єм етилового спирту.
Ответ учителя по предмету Химия
На мою думку об’єм =113.09
Объяснение:
Похожие вопросы от пользователей
Задание 1.
Вставьте нужное слово, чтобы получилось идиоматическое выражение.
Ground, jam, ABC, table, costs, mouth, mark, stone, peace, heart
to be down in the _________ — повесить нос
to be on firm _____________ — чувствовать твердую почву под ногами
to do smth to one’s ___________ content – делать что-либо сколько душе угодно
as easy as _____ – как дважды два – четыре
at all _________ — любой ценой
to be in a ___________ — попасть в переделку
to leave no __________ unturned – ни перед чем не останавливаться
to leave someone in __________ – оставить кого-либо в покое
cards on the _________ — открыть карты
to overshoot the __________ — перегнуть палку
Задание 2.
Перепишите следующие предложения в прошедшем времени.
Helen says her friends have just arrived in the USA.
He says they were friends at school.
She says she will take them to the cinema on Saturday.
He says they have not been here for a long time.
They say they will write a letter to me when they return home.
He says he is sure that the girls will be excellent translators.
She says they have learnt a lot of new rules.
Martin says that several students will visit his school on Wednesday.
She says she has just met him in the street.
They say their nephew told them a lot of interesting things about his travel.
Задание 3.
Перепишите следующие общие вопросы в косвенной речи.
He asked me, “Do you often see your relatives?”
They asked me, “Will you see your brother before you leave?”
I asked my daughter, “Have you packed your suitcase yet?”
I asked Kate, “Did anybody meet you?”
Mike asked Jane, “Will you come to the station to see me off?”