When removing oil from a low pressure system, the temperature should be 130°F because, less refrigerant will be contained in the oil at higher temperature. Liquid charge into a deep vacuum will boil and may lower temperatures enough to freeze water in the tubes.
There are no zeros, so all three digits<span> are significant.</span>
<span>b. 3440.</span>
Answer:
C.
Explanation:
...........................
14 uranium atoms in pure uranium