взаимосвязь количества вещества и молекулярной массы

взаимосвязь количества вещества и молекулярной массы

8th Grade

10 Qs

quiz-placeholder

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взаимосвязь количества вещества и молекулярной массы

взаимосвязь количества вещества и молекулярной массы

Assessment

Quiz

Chemistry

8th Grade

Practice Problem

Medium

Created by

Надежда Назаргалина

Used 11+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Выберите формулу для нахождения количества вещества, если известна масса

n=m/M

n=M/n

n=N/NA

n=V/VM

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Формула для нахождения массы

m=n*M

m=N*NA

m=M/n

m=V*VM

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

What is Avogadro's number?

NA=6.02*1023 mole-1

NA=6.02*1023 mole

NA=0.602*1020 mole-1

NA=6.02*1022 mole-1

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

How many atoms are there in 0.2 mol of methane molecules, CH4?

1.204 × 1023

6.022 × 1023

3.011 × 1024

1.204 × 1022

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

How many carbon atoms are there in 12.0 g ?

12.044 × 1023

1

12

6.022 × 1023

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Чему равно число молекул в 1 моле любого вещества?

6,02*1023

1

1,67*10-24

1,67*10-27

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Чем отличается молярная масса от молекулярной массы?

количеством букв в словосочетании

ничем

единицей измерения

количеством атомов

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