One Step Conversions
Calculate the number of moles in 83.5 g of Cl.
2.36 mol Cl
Calculate the number of chlorine atoms in 24.3 g Cl.
4.13*1023 atoms Cl
Fructose is an ingredient found in many prepared foods. Its chemical formula is C6H12O6. What is its empirical formula?
CH2O
Quinine is used to treat malaria and has a molar mass of 325 g/mol. If the empirical formula is C10H12NO, what is the molecular formula?
C20H24N2O2
Calculate the number of moles in 2.98*1023 molecules of P2O5.
0.495 mol P2O5
Calculate the number of atoms in 4.22 mol CHCl3.
2.54*1024 atoms CHCl3
Determine the mass of 2.19*1023 atoms of Na.
8.36 g Na
Caffeine is found in coffee and many soft drinks. Its chemical formula is C8H10N4O2. What is its empirical formula?
C4H5N2O
Adipic acid is used to manufacture nylon. If the molar mass is 147 g/mol and the empirical formula is C3H5O2, what is the molecular formula of the compound?
C6H10O4
Calculate the number of atoms in 3.77 moles of CO2.
2.27*1024 atoms CO2
Calculate the number of moles in 3.45*1022 molecules of CHCl3.
0.0573 mol CHCl3
Determine the mass of 2.97*1023 atoms N2O5.
62.1 g N2O5
A compound is found to be 63.65% N and 36.35% O by mass. Determine its empirical formula.
N2O
Ethylene glycol is used as permanent antifreeze. If the molar mass is 62 g/mol and the percent composition is 38.7% C, 9.74% H, and 51.6% O, what is the molecular formula of ethylene glycol?
C2H6O2
Convert 213 g Na2S to formula units.
1.64*1024 f.u. Na2S
Calculate the number of moles in 1.55*1021 molecules of O2.
0.00257 mol O2
Convert 2.97*1023 atoms of (NH4)2O to grams.
25.7 g (NH4)2O
A compound is found to be 51.95% Cr and 48.05% S by mass. Determine its empirical formula.
Cr2S3
Dioxane is a common solvent for plastics. If the molar mass is 88 g/mol and the percent composition is 54.5% C, 9.15% H, and 36.3% O, what is the molecular formula of dioxane?
C4H8O2
A 29.3 g sample of Ti reacts with O2 to form 48.9 g of product. Determine the empirical formula of the product.
TiO5
Calculate the number of atoms in 27.6 mol Al2(CO3)2.
1.66*1025 atoms Al2(CO3)2
Convert 7.98*1023 atoms S to grams.
42.5 g S
A 20.00 g sample of a compound is decomposed and is found to contain 5.05 g Ti and 14.95 g Cl. Determine its empirical formula.
TiCl4
Lindane is an insecticide. If the molar mass is 290 g/mol and the percent composition is 24.8% C, 2.08% H, and 73.1% O, what is the molecular formula of lindane?
C6H6O12
Mercurous chloride is a fungicide. If the molar mass is 470 g/mol and the percent composition is 85.0% Hg and 15.0% Cl, what is the molecular formula of mercurous chloride?
Hg2Cl2