hoáa

hoáa

12th Grade

29 Qs

quiz-placeholder

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30 Qs

hoáa

hoáa

Assessment

Quiz

Others

12th Grade

Practice Problem

Easy

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4ws4qyy6bc apple_user

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29 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

khi luồng khí dư h2.. chất rắn còn lại

al2o3,fe,cu,mgo

al2o3 feo cuo mgo

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

cho y3+/y2+…

y3++x_>y2+*x2+

ee

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

cho 4 dd ruền biệt hcl cucl2..

1

2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

puhh nào o thuộc loài pu nhiệt nhôm

al ts vs feso đun

al td vs axit h2so4 đặc nóng

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

cho 16,2g kim loại

mg

al

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

dãy kloai pu vs cuso4

al cu na

al fe mg cu

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

mệnh đề o đúng là

fe khử dc cu

fe2+ oxh dc cu

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