Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
OldSpice OldSpice
wrote...
Posts: 6432
9 years ago
An emerald gemstone is an impure form of the mineral beryl, Be3Al2Si16O18 (818.43 g/mol). What is the percentage of aluminum in the mineral?
A) 3.30%
B) 3.37%
C) 6.59%
D) 35.2%
E) 54.9%
Read 1228 times
6 Replies
Replies
Answer accepted by topic starter
ElectricElectric
wrote...
Top Poster
Posts: 6431
9 years ago
Sign in or Sign up in seconds to unlock everything for free
1
.silent.boss

Related Topics

OldSpice Author
wrote...
9 years ago
Perfect!

..Thank you so much for your support
wrote...
9 years ago
My pleasure
.silent.boss
wrote...
3 years ago
Gracias senior!
wrote...
3 years ago
Thank you
wrote...
Educator
A year ago
In case you're asking for Silicon, here's how it's done :-)
 Attached file 
Thumbnail(s):
You must login or register to gain access to this attachment.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  847 People Browsing
 116 Signed Up Today
Related Images
  
 253
  
 146
  
 1032
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741

Previous poll results: How often do you eat-out per week?