Metric, Conversions, Density
10,000 grams
What is the atomic mass made of?
# proton+ # neutrons
Name both of these polyatomic ions
NH4+
NO3-
SO3-2
ammonium
nitrate
sulfite
What is the molecular geometry of water
bent
Which elements can partake in a hydrogen bond?
H-ONF
Convert 0.00469 cm to km
4.69x10^-8 km
Name the element based off of the following properties:
# Protons - 47
# Neutrons - 61
Atomic Mass - 108
Silver (What is the symbol also?)
Count the number of valence electrons
What is the ON of oxygen usually
What secondary attractive forces are present in HBr
Dipole-Dipole, London Dispersion Forces
What is the conversion factor for mL to L
1 L/1000 mL
Write the electron configuration for sodium
1s^2, 2s^2, 2p^6, 3s^1
When drawing the lewis structure for a compound with a charge what does this do?
subtract or add the number from the charge
brackets with the charge outside of it
4Fe + 3O2->2Fe2O3
How many moles of Fe2O3 are produced when 0.275 moles of Fe are reacted?
0.138 mol Fe2O3
If 4 moles of a gas at a pressure of 5.4 atmospheres have a volume of 120 liters, what is the temperature?
1973 K
A loaf of bread has a mass of 257 g and a volume of 2,500 cm^3. What is the density of the bread?
0.1028 g/cm^3
Write the electron configuration for bromine
1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^10, 4p^5
What is the definition of electronegativity? What is its trend on the periodic table?
BONUS: What is the most electronegative element?
Tendency of an atom to attract a bonding pair of electrons
http://chemteacher.chemeddl.org/joomla/index.php?option=com_content&view=article&id=91
FLOURINE
What are the oxidation numbers of N and H in NH3?
N: (-3)
H: +1 (+3)
An acid will ____ a proton?
A base will _____ a proton?
donate
accept
The density of a substance is 4.0 g/cm^3. If a sample of the substance has a volume of 25 cm^3, then what is its mass?
100 grams
What is the difference between an ionic and covalent compound-give an example of both
ionic-non metal + metal (gain/lose electrons)
covalent-non metal+non metal (share electrons)
At what temperature does 5.00g of H2 occupy a volume of 50.0 L at a pressure of 1.01 atm?
How many moles of gas would you have if you had a volume of 38.0L under a pressure of 1432 mmHg at standard temperature?
248 K
3.2 mol