Тест 5
9th Grade
•40 Qs
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Тест 5
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Жайдарлым Ермұрат
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
При горении углеводородов образуется так называемый « Сухой лед" который является частью газа, выделяемого человеком и животными при дыхании
Определите формулу сухого льда который получается при охлаждении под высоким давлением газа, образующегося при сгорании углеводородов. Газ входит в состав выделяемого газа человеком и животными
СО5
СО4
СО2
СО3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Формулы малахита
CO₃(OH)₂
Cu₂(OH)₂
Cu₂CO₃(OH)₂
Cu₂CO₃
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Хлороформа
CHCl₃
COCl₂
COCl
CCl
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Состав мельхиора
медь и сталь
меди и никеля
железо и серебро
никель и неон
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Металл, получаемый при электролизе только расплава
щелочной или щелочноземельный металл
галоген
халькоген
инертные газы
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Фактор, снижающий энергию активации
температура
давление
катализатор
концентрация,
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Задача с КNO3 196г 14%ный при электролизе..вес снизился на 36г. Найти концентрацию раствора
17.5 %
17.15 %
15 %
115 %
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