What is the molal concentration,m,of tin in a solution of 5.000grams of tin dissolved 95.000grams of copper

Formula to be used:

Molality = moles of solute / kg solvent

Steps:
#1. To do this, get the molar mass of Tin, using a periodic table. Fomula for Tin in Sn (look it up in the periodic table, and you'll see its mass).

#2. After you get the mass of Tin, divide it by 5 g, and you'll have the moles of solute.

#3. Finally, divide moles of solute to 95 g Copper. Of course, convert first grams to kilograms.

Hope this helps :3