
Количество вещества. Число Авогадро

Quiz
•
Chemistry
•
6th - 8th Grade
•
Hard

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7 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Количество вещества обозначается символом:
1) m
2) n
3) NA
4) N
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Число Авогадро равно:
1) 6 · 1020
2) 6,02 · 1021
3) 6,02 · 1023
4) 6,02 · 1022
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
ПРАВИЛЬНАЯ ФОРМУЛА ДЛЯ РАСЧЕТА ХИМИЧЕСКОГО КОЛИЧЕСТВА ВЕЩЕСТВА
n = V/M
n=m/M
n=N*V
n=V/Vm
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Сколько атомов кислорода содержится в 1 молекуле серной кислоты H2SO4 ?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Количество вещества рассчитывается по формуле:
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Как посчитать количество атомов кислорода, содержащегося в серной кислоте
H2SO4
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Постоянное число Авогадро = а*1023/моль, где а=
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