Answer:
119.28g
Explanation:
Data obtained from the question include:
Number of mole of Si = 4.26 mol
Molar Mass of Si = 28g/mol
Mass of Si =?
Number of mole = Mass /Molar Mass
Mass = number of mole x molar Mass
Mass of Si = 4.26 x 28
Mass of Si = 119.28g
I think the correct answer would be B. The process of electroplating uses a direct current in order to give a cheap metal the apperance and resistance of a more expensive metal by coating it with a certain metal. The current reduces the dissolved metal ions to form a thin coating on a surface.
Answer:
copper
Explanation:
so for this you can work out the mass for both and compare
so mass = moles × mr
so mass of sodium = 1 × 23= 23 g
and mass of copper = 1 × 63.5= 63.5 g
so copper have more mass :)
