chemistry mole concept... help please?

Question

calculate the formula mass for:
- ammonium phosphate

please explain to me how i can work this out

Answer 1

I used to have a problem with these qs!

If you're talkng about relative formula mass...If you have the chemical formula of ammonium phosphate, look up the mass number (number of protons and neutrons) of each element in the periodic table, and add them together. I'm not going to do it for you!

If there are two or more atoms of an element, eg H2, then you multiply the mass number of that element by however many atoms there are.

Hope I answered your question! :)

Answer 2

First of all, you should know that ammonium phosphate is (NH4)3PO4. (The numbers should be smaller.)

Then grab a periodic table. You might notice that each element has a strange number in its box. That's the atomic mass of that element. All you do is add up the masses for your substance and you'll have your molar mass.

I don't have a periodic table with me right now, but I'll tell you what you need to do. You have 3 NH4s, so you'll have to find the mass of N three times combined and H 12 times combined. Then you add that to the mass of one P and the mass of 4 Os combined. Add all this together, and you'll have your answer: 149.12g/mol

Answer 3

it isn't a danger to finish chemistry and to do chemical calculations when you're festricted to using mass instruments which incorporates grams there is no danger of doing any chemical calculations when you're informed that you've reacted 15g of magnesium metallic with 24 g of oxygen. How a lot oxide is produced? Who is favourite with? until eventually you pass the mol course it isn't a danger to say. those 2 compounds . like each and every chemical compounds do no longer react on a gram to gram foundation. They react on a molecule to molecule foundation. yet because the molecule is this style of very small quantity of matter , we use a more beneficial accessible unit called the mole. chemical compounds react with one yet another in accurate ratios of moles. in the above party , 2 mol of Mg reacts with a million mol of O2 to provide 2 mol MgO you could now answer the question: If 8mol of Mg react with 4mol of O2, what percentage mol of MgO are produced - you probable can answer 8 mol MgO. The mole is actual an expression used to outline the fashion of things. Mole isn't a mass unit. a million mol of a few thing incorporates 6.022*10^23 ( an somewhat tremendous quantity) products. 1mol of chemistry instructors is 6.022*10^23 chemistry instructors a million mol of sand grains is 6.022*10^23 sand grains a million mol oxygen molecules = 6.022*10^23 oxygen molecules. you'll actually see that each and every of those 3 products would have diverse finished mass - a million mol of instructors would have a lot more beneficial mass than a million mol of sand grains which will have a lot more beneficial mass than a million mol of oxygen molecules. keep in mind that the mol is a level of the fashion of things - it isn't a mass unit.

Answer 4

The formula for ammonium phosphate is (NH4)3PO4

So, in getting the formula mass. . .
N=14.01*3=42.03
H=1.01*3*4=12.12
P=30.97
O=16.00*4=64.00
----------------------------
149.12u

-It's just as simple as that!

Answer 5

(NH4)3 PO4
mass=149gms=1mole