Naming
What the name of the compound C5O3?
pentacarbon trioxide
what is the prefix for kilo?
103
What is not inside the nucleus of an atom?
electrons
what is the units for molar mass?
g/mol
noble gases
What is the correct formula for the compound with the name calcium nitride?
Ca3N2
A bottle of soda has a volume of 431 mL. What is the volume in L?
0.431 L
the total number of protons and neutrons
A chemical reaction requires 7.00 moles of Fe(NO3)3. What mass of iron(III) nitrate is needed?
1.69x103 g
The symbol Au corresponds to which element?
gold
What is the correct formula for the compound lead(II) oxide?
PbO
The density of air at room temperature and at sea level is 1.29 g/L. What is its density in units of g/mL?
0.00129 g/mL
List the number of protons, neutrons, and electrons for 32Ca2+
protons: 20
neutrons: 12
electrons: 18
How many nitrogen atoms are present in 0.250 moles of Zn(NO3)2?
3.01x1023
hydrogen, fluorine, oxygen, nitrogen, chlorine, bromine, iodine
What's the name for HNO3?
nitric acid
How many pounds of Skittles are in a bag that contains 312 g? (1 lb = 435.6 g)
0.716
How many protons does a Ba2+ ion have?
56
if the molar mass of a substance is 37.2 g/mol, what is the mass of 3.02x1024 molecules of the substance?
186 g
what's the name of the metals that require roman numerals when naming?
transition metals
What is the formula for barium carbonate?
BaCO3
If a jet's cruising altitude is 41,300 ft, this distance in km is _______.
(1 mile = 1.609 km; 1 mile = 5280 ft)
12.59 km
The number of protons and neutrons in an atom of argon-42 is
protons: 18
neutrons: 24
Barium sulfate is a compound used to assist in diagnosing medical problems through X-Ray analysis and is 58.8% by mass barium. What mass of barium is present in a 640 mg tablet of barium sulfate?
376 mg
What are the names of the elements: Hg, Pb, K, and Na?
Hg: mercury
Pb: lead
K: potassium
Na: sodium