The graph below shows the shape of the curve obtained by a student when solid X was heated to boiling.

      

The graph below shows the shape of the curve obtained by a student when solid X was heated to boiling.

min.png

a) Determine the melting point of solid X.

b) After the experiment the student concluded that substance x was pure substance. Explain why he concluded so.

c) If candle wax was used in the above experiment the portion QR would be horizontal. What does this tell us about candle wax?

  

Answers


Martin
a)30 degrees C.

b)The melting point of the substance was sharp.

c)Candle wax is not pure substance, it is made up of mixture of substances.
marto answered the question on October 1, 2019 at 09:07


Next: Eleza maana ya ngoma katika fasihi simulizi kisha utoe dhima zake nne.
Previous: In what ways has the practice of family planning brought conflicts in the modern families?

View More Chemistry Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions