Is it the metal in my above balanced equation ?

[Starrrrr]

Homework Statement

Part one : A number of metals react with HCl to form salts of general formula MCl2.
Write a balanced chemical equation for such a reaction.

After a piece of one of these metals had reacted completely with the acid in 55.8 cm3 of 1.24M HCl, the resulting solution, which conducted electricity, was evaporated to dryness. The residue had a mass of 4.72g.

Part Two:
Part two: What is the atomic number and name of the metal?

Homework Equations

N/A

The Attempt at a Solution

So for part one I did : Mg+2HCL>MgCl2+H2

Then for part two is it the metal in my above balanced equation ? Simple yes or no answer

Thanks!

 

[Bystander]

55.8 cm3 of 1.24M HCl,

residue had a mass of 4.72g.

How many moles?

 

[Starrrrr]

How many moles?

H+=0.0692 moles/L and Mg=0.0346 moles

 

[Bystander]

Can you show your work?

 

[Borek]

So for part one I did : Mg+2HCL>MgCl2+H2

It would be better to use symbol Me (as in generic Metal) than Mg - at this stage you don't know the identity of the metal.

Mg=0.0346 moles

What is the mass of 0.0346 moles of MgCl₂? Does it confirm the identity of the metal?