- #1
lioric
- 323
- 26
- Homework Statement
- 0.1 mol of metal X (Ar = 27) was burned in oxygen to give an oxide with mass of 5.1g. What is the formula of the metal oxide if it has a relative molecular mass of 30?
The choices are
XO
X2O3
XO2
X2O
The answer says X2O
But if I add up X2O the RMM is 70 not 30
- Relevant Equations
- This question is confusing
I don't understand how the RMM could be 30
I haven't gone into a solution cause I found this question confusing