The energy an objective has because of its motion.
What is kinetic energy?
100
91.22
What is the average atomic mass of Zirconium?
100
In Ireland because it is not found in a free state.
Where is nitrogen not found? And why?
100
138 pm
What is the atomic radius of Iodine?
100
A molecule that has two poles is called a dipolar molecule, or a __.
What is a dipole?
200
The heat absorbed by one mole of a substance in melting from a solid to a liquid at a constant temperature.
What is molar heat of fusion?
200
7.37
What is the vapor pressure (kPa) of water at 40 degrees C?
200
CH4 + 2O2 -----> CO2 + 2H2O
What is -890 kJ?
200
He:
What is the electron dot structure of He?
200
The inward force, or pull, that tends to minimize the surface area of a liquid.
What is a surface tension?
300
The measure of how much the volume of matter decreases under pressure.
What is compressibility?
300
1s2 2s2 2p6
What is the electron configuration of Ne?
300
144 kJ
What is (129 kJ) divided by (2 mol NaHCO3)?
300
Colorless sweet-smelling gas. It is used as an anesthetic commonly called laughing gas.
What is the properties and uses of Nitrous Oxide?
300
Light quanta.
What is a photon?
400
It includes radio waves, microwaves, infrared waves, visible light, ultraviolet waves, x-rays, and gamma rays.
What is electromagnetic radiation?
400
24.5
What is the freezing point of neon?
400
It rather depends what you mean by not being breathed before. If you're only interested in the molecules not having been breathed in before- and specifically if you're interested in the oxygen and nothing else- than any oxygen molecule you're breathing in either hasn't been breathed before at all or it can't have been breathed more than a few times, because otherwise it wouldn't be oxygen anymore, it would be carbon dioxide!
Has all the air in the world been breathed before?
400
Several atomic orbitals mix to form the same total number of equivalent hybrid orbitals.
What happens in hybridization?
400
The __ of a compound is the change in enthalpy that accompanies the formation of one mole of a compound from its elements with all substances in their standard states at 25 degrees C.
What is the standard heat of formation?
500
All of the H-C-H angles are 109.5 degrees.
What is a tetrahedral angle?
500
Sucrose
What is the substance that has a kJ/mol of -5645
500
They are essentially the same thing. Heat is happening on a very very small scale; if you imagine the heat waves and the wavelengths of the vibrations are very small and about the same size as a normal atom. With sound, the wavelengths of the vibrations are a few centimeters. So in a sound all the toms are moving in the same direction close to each other. Eventually, the vibrations of sound will start breaking up and moving off in random directions and it will convert into what we feel as heat.
If sound and heat are both vibrations, then why isn't sound hot and heat loud?
500
The Dutch chemist Johannes van der Waals.
Who is van der Waals forces named after?
500
The accurate and precise measurement of heat change for chemical and physical processes.