
Задачи
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
СМИТАП | Онлайн-школа
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Что вам нужно, чтобы найти массу вещества?
М
n
Vмол
NА (число Авогадро)
m
2.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Что вам нужно, чтобы найти объем вещества?
М
Vмол
n
NА (число Авогадро)
m
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Чему равен Vмол?
4.
MATCH QUESTION
1 min • 5 pts
Соотнесите обозначения с соответствующими им единицами измерения
моль
V
л/моль
Vмол
%
n
г
m
л
w
5.
MATH RESPONSE QUESTION
2 mins • 1 pt
Какую массу соли можно получить упариванием 200г 15%-ного раствора этой соли?
Mathematical Equivalence
ON
6.
MATH RESPONSE QUESTION
2 mins • 1 pt
Вычислите массу 20%-ного раствора гидрокисида натрия, содержащего 8г щелочи.
Mathematical Equivalence
ON
7.
MATH RESPONSE QUESTION
2 mins • 1 pt
Какой количество (n) кислорода (при н.у.) выделится в результате реакции, термохимическое уравнение которой: 2KClO3 = 2KCl + 3O2 – 91 кДж,
если на разложение бертолетовой соли было затрачено 273 кДж теплоты.
Mathematical Equivalence
ON
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