17. The best way to determine if two solid samples with very close melting point

Question

17. The best way to determine if two solid samples with very close melting points are the same compound is: a. calibrate the thermometer b. repeat the measurements heating the samples more slowly c. double check your observed melting points on a second apparatus d. mix the two samples together and record the mixed melting point 18. During refractive index, which of the following shows the most likely path of a photon of light as it enters a sample of liquid from the atmosphere? atmosphere liguid b. B d. D C.

Explanation / Answer

17) mix both of them together , as melting point will remain same even after mixing as melting point will be same for whole sample of same type d)

18) refraction will take place and light goes from optically rarer medium to denser medium , so light bends toward normal so path B

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