Choose the substance with the lowest boiling point. H₂S ONBr3 OF2 CF ₂H₂ H₂O2

Write the Lewis structure(s), predict the molecular/ion shape (eg. linear) , and the types of intermolecular forces present (Choose from London dispersion forces, Dipole-dipole, Hydrogen bonding) of the following molecules and ions to complete the table below. Molecule/Ion Total number of valence electrons Lewis structure(s) Molecular/ Ion shape Type of intermolecular forces (one response only) HBr         NH3         ??2−3CO32−         NA Leave empty

In the phase diagram, which transition represents the condensation of a gas to a liquid? B •D A to D OA to B OCto D OD to B B to A

the process of sublimation happens when which of the following occurs? a liquid becomes a solid a liquid  becomes a gas a gas becomes a solid a solid becomes a liquid a solid becomes a gas

Arrange He, Ne, and Ar in the order of increasing boiling points. Ar < He < Ne Ne < He < Ar He < Ne < Ar Ar < Ne < He He < Ar < Ne

Calculate the heat energy released when 16.2 g16.2 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point.

How much energy is required to heat 54.0 g H 2O from a liquid at 25.0°C to a complete gas at 100 °C? The following physical data may be useful.   ΔH vap = 40.7 kJ/mol;    Cs,H2O = 4.18 J/g. °C     122 kJ     16.9 kJ     151 kJ     139 kJ     19.1 kJ

Calculate the heat energy released when 22.9 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point.

Which of the following processes would absorb the most amount of heat energy (for 1 g of H20)?a) fusion b) condensation c) solidification d) vaporization e) deposition

How much heat, in joules and in calories, must be added to a 89.1 g chromium block with a specific heat of 0.450 J/g·°C to increase its temperature from 25°C to its melting temperature of 1907°C?