Blood stored at 4°C lasts safely for about 3 weeks, whereas blood stored at -160°C lasts for 5 years. What is the temperature for the blood that keeps longer using the Kelvin scale? A. 113 K
B. 120 K
C. 100 K
D. 143 K

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Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings