Answer:
1 mole of Sn
Explanation:
Tin (Sn) reacts with hydrogen fluoride (HF) to form stannous fluoride (SnF2), a compound that is used in toothpaste to strengthen tooth enamel. Another product of this reaction is the H2 that is released as gas.
Sn + HF ⇒ SnF₂ + H₂
Once we have the equation, we balance it on both sides.
Sn + 2 HF ⇒ SnF₂ + H₂
To make the following calculation we have to find out how much a mole of Sn weighs.
Sn= 118.69 g/mol
HF = 20.01 g/mol
Sn + 2 HF ⇒ SnF₂ + H₂
118.69 g 2 x 20.01 g
118.69 g <---- 40.02 g
Every 2 moles of HF (40.02g) reacts 1 mole of Sn.
