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

Please help! 30 points and I will mark brainliest! Thanks!

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In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

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