What Is the Metal in M(OH)2 with 32.8% Oxygen by Mass?

AI Thread Summary
The discussion revolves around determining the identity of the metal M in the hydroxide M(OH)2, which contains 32.8% oxygen by mass. The calculations initially attempted included using the mass of oxygen and hydrogen to find the remaining mass percentage for the metal. The user incorrectly identified the metal as Zinc but later corrected their calculations to arrive at the correct answer. Accurate calculations using the exact percentage of oxygen are crucial for identifying the metal. The thread highlights the importance of precision in chemical calculations.
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Homework Statement



A certain metal hydroxide, M(OH)2, contains 32.8% oxygen by mass. What is the identity of the metal M?

Homework Equations


O = 16.00 g x2
H = 1.008 g x2

The Attempt at a Solution



I thought that 1g = 1% of the mass because there are 32g of O and it composed of 32.8% of O. So then I thought it would be around 2% of H. Then I added 32.8% + 2% and subtracted it from 100%. This was supposely my answer. I thought it was Zinc and it was wrong.
 
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You are not completely off, but you have to do your calculations using exact value of the oxygen percentage.

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oh thanks...i got the right answer now
 

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