Atoms and Bonding
The oxidation number of the nitrogen atom in a nitrite ion
What is +3?
Mass percent is this kind of physical property
What is an intensive physical property?
Heat transferred at constant pressure
What is enthalpy?
The pressure exerted by gas in equilibrium with its liquid phase at a given temperature
What is vapor pressure?
What is the most-probable speed?
This periodic trend relates to the shielding of valence electrons
What is effective nuclear charge?
The maximum amount of desired product that can be recovered in a chemical reaction
What is the theoretical yield?
During a chemical or physical process, energy is transferred between these macroscopic entities
What are the system and the surroundings?
The heat that a solid or liquid absorbs during heating is related to these physical properties of the substance
What are mass, specific heat, and temperature?
The process that describes a gas particle escaping through a tiny hole to an area of low pressure
What is effusion?
The number of electrons represented in a pi bond?
What is 2?
The brightness of light is a macroscopic measurement of this property of a wave
What are reactants and products?
The phase change when a substance goes from the liquid state to the solid state
What is freezing?
The root-mean-square speed of methane at 298 K
What is 681 m/s?
According to the Lewis model, the H-Cl bond in hydrogen chloride is this kind of bond
What is a polar covalent bond?
(6.10 + 31.03) - 4.
What is 33.?
The moles of dioxygen remaining when 2 moles of dihydrogen and 2 moles of dioxygen react to form water
What is 1 mole? or What is 1?
What is the enthalpy of fusion?
0.08206 L atm mol-1 K-1
What is a gas constant? or What is an ideal gas constant?
Elements in the s-block and p-block of the periodic table but not those in the d-block and f-block
What are main group elements?
The molar concentration of sodium ions in a 0.200 M aqueous solution of sodium sulfate
What is 0.400 M?
heat and enthalpy depend on this, but not temperature
What is the amount of substance?
The freezing point of a pure liquid changes in this manner when a solute is dissolved in it
What is becomes lower? or What is decreases?
In a mixture that contains 3.0 mol xenon and 2.0 mol helium, the partial pressure of helium when the total pressure is 100. torr
What is 40. torr?