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.
A roast beef sandwich made with 2 oz. of roast beef from the eye of round and two large slices of commercially prepared white bread contains 270 calories. Use smaller slices of bread and save just 22 calories. Adding condiments to your sandwich may significantly affect the calorie count.