UNIT 9 TEST please help me for all the questionI will give u

UNIT 9 TEST

please help me for all the question,I will give u 5 star praise and review. thanks :)

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What is the amount of energy released by 15 g of tin as it freezes (solidifies) at 232°C?

9. 900 kJ

10. -464 kJ

15. 0.453 kg

19. Copper

20. 150,000 km/sec.

28. yellow and blue

29. diffraction