The volume expansivity of a gas under constant pressure is 0.0037. Calculate its volume at its volume at -100^(@)C if its volume at 100^(@)C is 685 cm^(3).

The volume expansivity of a gas under constant pressure is 0.0037. Cal

1.	The volume expansivity of a gas under constant pressure is 0.0037. Calculate its volume at its volume at -100^(@)C if its volume at 100^(@)C is 685 cm^(3).
Answer» Solution :Volume expansivity of a gasmeans INCREASE or decrease in volume per DEGREE rise or fail in temperature of its volume at `0^(@)C`. `V_(t)=V_(0)+0.0037xxV_(0)xxt=V_(0)(1+0.0037 t)` At `100^(@)C"" V_(100^(@)C)=V_(0)(1+0.0037xx100)=685"cm"^(3)"" ("Given")"or" V_(0)=(685)/(1.37)=500" cm"^(3)` At `-100^(@)C,"" V_(-100^(@)C)=500[1+0.0037xx(-100)]=315" cm"^(3)`