Answer:
Yes
Explanation:
The possibility of evaporating and condensing is a proof of reversible reaction
The substance that the molecules have the strongest
attractions to one another is the sugar,
a solid. The answer is letter A. The solid has a more definite shape and
volume. The particles are locked into place. It cannot be further compressed
due to the bond that exists between the molecules. The kinetic energy of the
molecules is close to none because the molecules are so close and so compact
with each other.
Answer:
860 J / mol
Explanation:
Enthalpy = Energy / no. of moles
no. of moles = mass / molar mass
Take the atomic mass of H = 1.0,
molar mass of H2 = 1.0 x 2
= 2.0
no. of moles of H2 = 9.00/2
= 4.5 mol
Hence,
Enthalpy = 3870 / 4.5
=860 J / mol
Answer: Lithium Fluoride
Explanation: Let’s see,,,
1. Obviously not hydrogen or carbon dioxide because they’re gas at room temp.
2. Lithium Fluoride is an ionic compound which means they have higher intermolecular forces and require more energy to break them, so it probably has a higher boiling point.
