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.
General Arrival Time. In general, the airlines and the Transportation Security Administration recommend that passengers arrive at the airport at least 90 minutes before domestic flights, including those to Hawaii and Puerto Rico. This allows ample time for you to check in for your flight, check baggage and go through security screening.