Molar Mass
What is the molar mass of N2
28.02 g/mol
How many mols is 1.204 x 1024 molecules of CO2
2 mols of CO2
How many grams in 2.00 mol of H2O
36.0 g H2O
How many molecules in 18.02 g of H2O
6.02 x 1023 molecules of H2O
A solution contains 1.00 mol of HCl in 5.00 L of solution. Calculate the concentration
0.2 M HCl
A solution contains 20 g of salt in 180 g of water. Calculate the mass percent of salt
10% salt
The air you breathe is mostly composed of what element
Nitrogen
What is the molar mass of C3H6
42.08 g/mol
How many molecules is 2.45 mols of H2O
1.47 x 1024 molecules of H2O
How many moles in 60.3 g of MgO
1.50 mol of MgO
How many grams in 1.505 x 1024 molecules of O2
80.0 g of O2
A solution contains 1.50 mol of calcium chloride in 750 ml of solution. Calculate the concentration
2.00 M calcium chloride
A student dissolves 18 g of sugar in 250 g of water. Calculate the mass percent of sugar
6.72% sugar
What part of the body contains highly concentrated hydrochloric acid
Stomach (stomach acid)
What is the molar mass of zinc bromide
225.20 g/mol
How many molecules is 0.75 mols of NH3
4.52 x 1023 molecules of NH3
79.8 g of Fe2O3
How many molecules in 68.1 g of NH3
2.408 x 1024 molecules of NH3
How many moles of NaCl are present in 2.00 L of a 0.500 M solution
1.00 mol of NaCl
A solution contains 7.5 g of CaCl2 dissolved in 142.5 g of water. Calculate the mass percent of CaCl2
5.0% CaCl2
What is the largest organ in the human body
The skin
What is the molar mass of Fe2CrO4
227.68 g/mol
How many mols is 2.38 x 1025 molecules of sulfur dioxide
39.5 mols of sulfur dioxide
How many mols in 111 g of Mg(NO3)2
0.748 mol of Mg(NO3)2
How many grams in 4.50 x 1022 molecules of CH4
1.20 g of CH4
What volume (in ml) of a 1.50 M KOH solution contains 0.300 mol of KOH
200 ml of KOH
A solution contains 85 ml of ethanol in 400 ml of total solution. Calculate the volume percent of ethanol
21.25% ethanol
Which bird is capable of sustained backwards flying
Hummingbird
Come up with a compound that has a molar mass of 194 g/mol
Variety of answers
How many molecules is 4.15 mols of tellurium hexafluoride
2.50 x 1024 molecules of tellurium hexafluoride
How many grams in 0.425 mol of ammonium sulfate
56.2 g of ammonium sulfate
How many grams in 4.75 x 1022 molecules of aluminum sulfate
27.0 g of aluminum sulfate
A solution contains 9.80 g of H2SO4 in 500 ml of solution. Calculate the concentration
0.200 M H2SO4
How much ethanol is needed to prepare 500 ml of a 20% ethanol solution
100 ml of ethanol
What is the most common element on earth
Iron