The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T 1 K to T 2 K is

1. A. 3 8 N a k B (T 2 - T 1)
2. B. 3 2 N a k B (T 2 - T 1)
3. C. 3 4 N a k B (T 2 - T 1)
4. D. 3 4 N a k B ( T 2 T 1 )

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