The reaction of calcium with water is represented by the equation
`Ca+2H_(2)OtoCa(OH)_(2)+H_(2)`
What volume of `H_(2)`, at STP would be liberated when 8g of calcium completely reacts with water
A. `0.2cm^(3)`
B. `0.4cm^(3)`
C. `224cm^(3)`
D. `4480cm^(3)`