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Balancing Equations
Conversions
Sig Figs and Periodic Table
Stoichiometry
Random
100
N2+H2-->NH3
What is N2+3H2-->2NH3
100
Conversion factor for seconds to hour
What is 1hr=3600sec
100
How many sig figs does 2001 min have?
What is 4?
100
4NH3 + 5O2 --> 6H2O + 4NO How many moles of H2O are produced if 0.176 mol of O2 are used?
What is 0.2112 mol H2O
100
Molar Mass of HCl
What is 36.46 g/mol
200
H2+O2-->H2O
What is 2H2+O2-->2H2O
200
Convert 5meters/second to cm/hr?
What is 1,800,000 cm/hr?
200
the number of protons is equal to
What is the atomic number?
200
4NH3 + 5O2 --> 6H2O + 4NO How many moles of NO are produced in the reaction if 17 mol of H2O are also produced?
What is 11.33 mol NO?
200
What is 500 000 000 in scientific notation?
What is 5.0 *10^8
300
C3H8+O2-->CO2+H2O
What is C3H8+5O2-->3CO2+4H2O
300
540K to C
What is 267 C
300
25.2 + 1.34 with correct sig figs
What is 26.5?
300
To go from grams to grams you must go through
What is moles?
300
# protons + # neutrons =
What is atomic mass?
400
P+O2-->P2O5
What is 4P+5O2-->2P2O5
400
23C to K
What is 296 K
400
25,000 in. has how many sig figs?
What is 2?
400
How many molecules are in 230 grams of CoCl2?
What is 1.07 *10^24
400
The horizontal rows are called
What are periods
500
Pb(OH)2+HCl-->H2O+PbCl2
What is Pb(OH)2+2HCl-->2H2O+1PbCl2
500
If the density of an object is 2.87 x 10−4 lbs/cubic inch, what is its density in g/mL?
7.95x10 g/mL
500
How many sig figs does 0.0042 lb have?
What is 2?
500
How many molecules are there in 9.34grams of LiCl?
What is 1.33 *10^23 molecules?
500
Formula for density?
What is mass/volume?