achang52
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PLEASE HELP!!!!!
Q1: Give the letter of a substance that is a solid at 20 °C
Q2: Give the letter of a substance that is a liquid at 50 °C

PLEASE HELP Q1 Give the letter of a substance that is a solid at 20 C Q2 Give the letter of a substance that is a liquid at 50 C class=

Respuesta :

marblesan

Answer:

A1: Z

A2: Y

Explanation:

Q1: Z is the only one with a melting point high than 20 °C.

Q2: Y is the only substance with both a melting point lower than 50 °C and a boiling point higher than 50°C