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gases
enthalpy
molecular geometry
random
extra random
100
what are the conditions for STP?
1 atm, 273 K
100
if a system is endothermic, what is the sign of q?
positive
100
what geometry best describes a molecule of carbon dioxide?
linear
100
the __________ of a substance is the energy required to heat 1.00 g of that substance by 1.00 K.
specific heat capacity
100
a doctor tells you to administer 8.5 cc of a drug to a patient. How many mL is this?
8.5 mL
200
What is the volume of an ideal gas at STP?
22.4 L
200
What is the energy required to heat a 100 g sample of water from 21.0 degrees Celsius to 31.0 degrees Celsius? The specific heat capacity of water is 4.184 J/(g*K)
4184 J
200
what is the molecular geometry for a molecule of XeF4?
square planar
200
What is the hybridization of the nitrogen atom in ammonia?
sp3
200
there are elements in the periodic table whose English name has no letters in common with the element symbol. Name four such elements
Potassium (K), sodium (Na), silver (Ag), antimony (Sb), Iron (Fe), lead (Pb), tungsten (W), gold (Au), mercury (Hg)
300
when dealing with an ideal gas, what two assumptions do you make?
no intermolecular forces, particles do not take up volume
300
What is the energy required to melt a 1.0 gram sample of ice?
333.6 J
300
If a molecule has a t-shaped geometry, how many lone pairs of electrons does it have?
two
300
What kind of orbital corresponds to the following four quantum numbers? n = 4, l = 3, m(l) = -2, m(s) = +1/2
4f
300
The sum of (1.23E-3) and (1.45E-4) is what number? (with correct sig figs)
1.40E-3 (three sig figs)
400
Nitrogen gas behaves very much like an ideal gas. What is the shape of the graph obtained for nitrogen when pressure vs. temperature is plotted?
straight line
400
What thermodynamic quantity is measured from a bomb calorimeter experiment?
delta E, change in internal energy
400
how many resonance structures are there for the carbonate anion?
three
400
A piece of solid magnesium is placed in a solution of hydrochloric acid. Does a reaction take place? If so, describe it.
hydrogen gas forms
400
This is the only letter that does not appear on the periodic table.
J
500
A sample of an ideal gas at 760 mmHg and 0 degrees Celsius occupies a volume of 0.224 L. How many moles of gas is in the sample?
0.01 mol
500
if you wanted to measure the energy change when a particular salt is dissolved in acid, what type of calorimeter would you use?
coffee cup (constant pressure)
500
what is the molecular geometry and hybridization of sulfur tetrafluoride?
seesaw, sp3d
500
X-rays generated from a copper target have a wavelength of 1.54 angstroms. What is the energy of this X-ray radiation?
1.29E-15 J
500
what are the only two elements that are liquid at standard temperature and pressure?
Mercury (Hg) and Bromine (Br)