[pizza1512]

Hi there! I'm not quite sure how to complete the end of this question, so can anyone help?

By mass, compound of iron, titanium and oxygen contains 28% iron, 36% titanium and has an M_r of 299.

Find its molecular and its empirical formulae.

This is currently what I have:

Elements	Fe	Ti	O
Proportions	28	36	36
Moles	28/56	36/204.38	36/16
Moles

0.5

	0.176...	2.25
Division by lowest factor

2

0.70411

9

Any help with corrections or solutions?

Thanks

[Dan]

This is currently what I have:

Elements	Fe	Ti	O
Proportions	28	36	36
Moles	28/56	36/204.38	36/16
Moles

0.5

	0.176...	2.25
Division by lowest factor

2

0.70411

9

Any help with corrections or solutions?

Thanks

The relative atomic mass of Ti is ~48, not 204!

Edit: I think there is also a typo in the question, M_r = 399, not 299