Login
Home
TOP
Send feedback
Login
Subjects
Chemistry CBSE Live product
Class 9
Atoms and molecules
PT2 Revision II - Atoms and molecules
10.
Formula unit mass
Question:
3
m.
Answer the following question:
Calculate the formula unit masses of \(ZnO\), \(Na_2O\), \(K_2CO_3\).
Atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.
The formula unit mass of
i.
\(ZnO\) =
\(150\ u\)
\(120\ u\)
\(81\ u\)
\(79\ u\)
ii.
\(Na_2O\) =
\(120\ u\)
\(79\ u\)
\(62\ u\)
\(150\ u\)
iii.
\(K_2CO_3\) =
\(150\ u\)
\(138\ u\)
\(120\ u\)
\(79\ u\)
Login
or
Fast registration
Previous task
Exit to the topic
Next topic
Send feedback
Did you find an error?
Send it to us!
