Tuesday

October 21, 2014

October 21, 2014

Posted by **Anonymous** on Wednesday, March 31, 2010 at 11:41pm.

a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2.

Answer: ?

b)How many atoms of iron are in 0.750 moles of the compound

Iron(III)oxide?

Answer: ?

- Chemistry -
**DrBob222**, Wednesday, March 31, 2010 at 11:50pmAnd it will never be your thing if we give you the answers.

a. g = moles x molar mass Remember this one formula and you can rearrange it to give you three things, depending upon the question.

a. grams = moles x molar mass

b. moles = grams/molar mass

c. molar mass = grams/moles.

There is no chemistry involved. This is just a little algebra.

b. There are 6.022 x 10^23 molecules in a mole of anything so 0.75 x 6.022 x 10^23 = the number of molecules of iron(III) oxide. The formula for iron(III) oxide is Fe2O3. You know how many molecules are there and there are _______ atoms in 1 molecule of Fe2O3 so there are _____ in 0.75 mole Fe2O3.

**Answer this Question**

**Related Questions**

Chemistry - Can you please someone check my answer for me? I don't know how to ...

Algebra - Would someone please check these answers? Simplify. 3/x-5+1/1-4/x-5 ...

Chemistry(Please check) - 1) The Ka for acetic acid is 1.8e-5. What is the pH of...

Physics =Please check - You're on planet YZ and an astronaut observes that a 1.0...

Algebra - Can someone check my algebra answers and help me with the problems I ...

Algebra Please Check answers - Directions: Determine whether each trinomial is a...

8th Grade Algebra: Answer Check #2 - Add or Subtract (Radicals) { this means ...

Math 8R: Homework Check - Part 2 - Part 2: Simplify by combining like terms and...

Chemistry - check answers - Can someone please check my answers and make sure ...

Asap can someone pplz check these answers - Please check my answers I have 2 do ...