Login
Login
Sign up
Home
TOP
Send feedback
See more
Terms and Conditions
Privacy Policy
Subjects
Science CBSE Homework Assignments
Class 9
Atoms and molecules
Atomic mass
1.
Atomic weight
Task:
2
m.
1.
Which of the following contains more than six oxygen atoms?
\(4ZnO\)
\(Al_2(SO_4)_3\)
\(2H_2O\)
\(3KNO_3\)
2.
A compound contains 28% N and 72% of a metal by weight. Three atoms of metal combine with two atoms of N. Find the atomic weight of metal.
34
22
26
24
Login
or
Fast registration
Previous topic
Exit to the topic
Next task
Send feedback
Did you find an error?
Send it to us!