× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
tony1653 tony1653
wrote...
Posts: 29
Rep: 0 0
11 years ago
and how many moles are in 129.7 g of Fe3(PO4)2?
Read 4986 times
2 Replies

Related Topics

Replies
wrote...
#1
11 years ago
H2SO4 is 98.02 g/mol  It has 4 O's, so that would be 64 g/mol

So 64 / 98 = 65.3 %

moles = mass / Molar Mass
wrote...
#2
11 years ago
Sulfuric acid: H2SO4

Molar mass sulfuric acid:
2 H x 1.008 = 2.016
1 S x 32.07 = 32.07
4 O x 16.00 = 64.00

Add them up we get, 98.086 g H2SO4.

Since molar mass of oxygen is 64 (4 O x 16), we do

64/98.086 x 100 = 65.2% oxygen

2. Grams -> mol

Given gram x 1 mol/molar mass

Molar mass Fe3(PO4)2:
3 Fe x 55.85 = 167.55
2 P x 30.97 = 61.94
8 O x 16.00 = 128.00

Add them up we get, 357.49 g Fe3(PO4)2

129.7 g Fe3(PO4)2 x 1 mol Fe3(PO4)2/357.49 g Fe3(PO4)2 = 0.3628 mol Fe3(PO4)2
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1234 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 251
  
 152
  
 202
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 352
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?