× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
Steptim Steptim
wrote...
Posts: 42
Rep: 7 0
10 years ago
1.   A 9.56-g sample of aluminum completely reacts with oxygen to form 13.34 g of aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide.

2.   What is the limiting reactant for the following reaction given we have 2.6 moles of HCl and 1.4 moles of Ca(OH)2? Reaction: 2HCl + Ca(OH)2 → 2H2O + CaCl2
Read 961 times
1 Reply

Related Topics

Replies
wrote...
#1
Subject Expert
10 years ago
Hi Steptim,

1. Completely reacts means that all of the Al is in aluminum oxide.
 9.56/13.34 * 100% = 71.66%

2. HCl is the limiting reactant.


Hope this helps,
Laser
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1310 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 148
  
 151
  
 274
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 431
Previous poll results: Where do you get your textbooks?