Suggest the identity of metal, M

Question

2M + 6HCl --> 2MCl₃ + 3H₂

d) if 0.032g of the metal M was reacted, work out the relative atomic mass of M and the identity.

Answer 1

You are given the mass of metal, m.

You are asked to solve for the atomic or molar mass, M=m/n, so you must first solve for moles, n.

However no other quantitative data is provided, so there is insufficient information to calculate moles of metal and its molar mass.

If you were provided the amount of a product, such as the mass of MCl3 or the volume of H2 gas, you could determine the moles of that species and then use stoichiometric ratios to calculate moles of metal, n.