thermochemistry
which has a lower specific heat, water or sand?
sand
what is the first law of thermodynamics
energy cannot be created or destroyed, it can only change form
what units are used to measure wavelength?
meters
If you wanted to decrease the concentration of a 6M sulfuric acid solution, what should you do?
add more water (or solvent)
other answers could be correct
which of the three subatomic particles is relatively massless?
electron
true or false: ΔC°=ΔK
true
which orbit is furthest from the nucleus of a chlorine atom, n=2 or n=4?
n=4
a photon
give an example of a weak electrolyte
plenty of answers
in which of the formulas (empirical or molecular) are the atoms given in their exact quantity?
molecular formula
Is molar mass a path or a state function?
state function
what can be exchanged to/from a closed system, energy, matter, both, or neither?
energy
which travels faster; gamma rays or radio waves
they travel at the same speed
what is the generic equation for a metathesis reaction (using variables a,b,c etc)
AB + CD ---> AD +CB
when must you include roman numerals in naming a substance?
when naming a cation with differing charge, like most transition metals
if the products of a reaction have a higher energy than the reactants, what type of reaction is it?
endothermic
the energy of a photon is directly proportional to what variable?
frequency
what makes gamma rays different from infrared rays?
wavelength / frequency
when bonds are broken, is energy consumed or released
energy is consumed
true or false: uncharged atoms become ions (i.e. Cl ---> Cl-) because they want to become noble gases
false
what is meant by the standard enthalpy of formation, (delta)H°f?
the enthalpy associated with formation of 1 mol of a compound in standard state under standard conditions
1 atm, 298 K
the ability to use Hess's Law to solve for ΔH° is possible because of what property of ΔH°
it is a state function
what is the Rydberg equation useful for?
relating the wavelength of a photon to the change in orbital experienced by an electron
true or false: all solutes that dissociate in a solvent will dissociate, but not all solutes that dissociate will dissolve
false
true or false: the atomic number for an element is almost always smaller than the atomic mass
true