The molar heat capacity is the heat capacity per unit amount (SI unit: mole) of a pure substance and the specific heat capacity, often simply called specific heat, is the heat capacity per unit mass of a material.
Long TSA lines this summer. The TSA is expecting long lines at their security check points during the busy summer travel season â especially when youâre traveling in the morning. The TSA recommends arriving at the airport at least 2 hours early for domestic travel and 3 hours early for international travel.
A few things to remember: 1  You must check in for international flights at least 60 minutes before the scheduled departure time. 2  You must be at the gate at least 20 minutes before the scheduled departure time. 3  You must check in for international flights online or at the check-in counters at the airport.*.