We now apply the definition of mass percent.Mass percent C 2 H 5 OH 100% 100% 100% 0.990% C 2 H 5 OHSelf-Check Exercise 15.1A 135-g sample of seawater is evaporated to dryness, leaving 4.73 g of solidresidue (the salts formerly dissolved in the seawater).
There are 70 calories in a 4 slices serving of Sara Lee Deli Roast Beef Slices. Calorie breakdown: 34% fat, 6% carbs, 60% protein.
Tips. 1  How long does sliced roast beef deli meat last in the fridge? 2  To maximize the shelf life of roast beef deli meat after opening, keep refrigerated in airtight containers or wrapped tightly in plastic wrap or aluminum foil. 3  Properly stored, sliced roast beef deli meat will last for 3 to 5 days in the refrigerator.