A substance has a melting point of 800ºC and a boiling point of 1465ºC. The substance is most likely
A. water.
B. hydrogen.
C. gold.
D. table salt.
D?
yes.
No, table salt (sodium chloride) is not the correct answer. The correct answer is C. gold. Gold has a melting point of 1064ºC and a boiling point of 2860ºC, which places it within the given range of 800ºC to 1465ºC.
To determine the most likely substance based on its melting point and boiling point, we need to consider the typical melting and boiling points of various substances.
Let's evaluate the options:
A. Water: The melting point of water is 0ºC, and the boiling point is 100ºC. Since the given substance has a much higher melting and boiling point, we can eliminate water as a possibility.
B. Hydrogen: Hydrogen has a melting point of -259ºC and a boiling point of -253ºC. The given substance has significantly higher values for both melting and boiling points, so we can eliminate hydrogen.
C. Gold: Gold has a melting point of 1064ºC and a boiling point of 2970ºC. The given substance has a higher boiling point but a lower melting point than gold, so it is not likely to be gold.
D. Table salt (sodium chloride): Table salt has a melting point of 801ºC and a boiling point of 1465ºC. The given substance has nearly the same boiling point as table salt, making it the most likely option among the given choices.
Therefore, the most likely substance based on the given information is D. table salt.