Nomenclature
Dimensional analysis
Molecules
Molarity/Stoch
Miscellaneous
100
What is the formula name for magnesium bromide?
MgBr2
100
Convert 1.515 mg/ml to µg/L
What is 1.515*10^6 µg/L
100
What percent of Carbon is in C6H12O6?
What is 40%
100
What are the units of molarity?
What is Moles/Liters
100
balance Cu(s) + AgNO3 (aq) --> Cu(NO3)2 (aq) + Ag(s)
What is Cu+2AgNO3-->Cu(NO3)2+2Ag
200
What is the name of HClO4
What is Perchloric acid
200
How many P4 molecules are there in 6.0 g of phosphorus?
What is 2.9 x 10^22
200
What is the molar mass of Copper(II) nitrate?
What is 187.54 g/mol
200
What is the molarity of a solution made by dissolving 5.34 g of magnesium iodide (MgI2) in enough water to make up a volume of 500.0 mL
What is 0.0384M
200
How many protons and neutrons are in 208/82 Pb
What is 126 neutrons and 82 Protons
300
Write out the name of NaNO2
Sodium nitrite
300
How many moles of NaBr are in 73 mL of a 1.500 M solution?
What is 0.11 moles
300
Nitrogen is made up of two isotopes, N-14 and N-15. Given nitrogen's atomic weight of 14.007, what is the percent abundance of each isotope? N-14=14.003074 N-15=15.000108
What is N-14=99.3% N-15=0.7%
300
To what volume (in L) should you dilute 50.0 ml of a 12 M stock HNO3 solution to obtain a .100M HNO3 solution?
What is 6.0L
300
balance H3PO4 --> H2O + P4O10
What is 4 H3PO4 --> 6 H2O(l) + P4O10
400
What is the name of P2O5
What is diphosphorous pentoxide
400
How many silver atoms are there in 3.78g
What is 2.11*10^22 silver atoms
400
Naturally occurring silicon consists of 3 isotopes, Si-28, Si-29 and Si-30, whose atomic masses are 27.9769, 28.9765 and 29.9738 respectively. The most abundant isotope is Si-28 which accounts for 92.23% of naturally occurring silicon. Given that the observed atomic mass of silicon is 28.0855 calculate the percentages of Si-29 and Si-30 in nature.
What is Si-30=3.10% and Si-29=4.67%
400
A compound composed of mercury, nitrogen and oxygen is analyzed and found to contain 76.39% mercury and 5.33% nitrogen.
What is HgNO3
400
Balance NH3+O2-->NO+H20
What is 4NH3+5O2-->4NO+6H2O
500
What is the name of Mn2O7
What is Manganese (VII) Oxide
500
The Toyota Prius hybrid electric vehicle has an EPA gas mileage rating of 48mi/gal on the highway. How many km can the Prius travel on 8.25 L of gasoline. conversion (1km=.62137mi), (1gal=3.78541 L)
What is 170 km
500
What is the empirical formula of a compound containing 79.99% Mo and 20.01% O?
What is Mo2O3
500
Combustion analysis of a hydrocarbon produced 33.01g of carbon dioxide and 13.51g of water. Determine the empirical formula of the hydrocarbon compound and the molecular formula is the molar mass of the unknown hydrocarbon is 84.16 g/mol.
What is C1H5 for the empirical formula and C6H12 for the molecular formula
500
If you have 96.1 g of C3H8 how much oxygen will react in a combustion reaction?
What is 349 g O2
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