Stoichiometric Calculations Answers

The molar mass of iron (III) oxide (Fe2O3) is 159.7 g/mol. What is the correct way to write the molar mass of iron oxide as a conversion factor?

The correct calculation is shown below. Did you perform the calculation correctly?

What is the mass of 1.84 mol NaCl? Give your answer to the correct number of significant figures. (Molar mass of NaCl = 58.44 g/mol)1.84 mol NaCl = g NaCl

The correct calculation is shown below.Did you perform the calculation correctly?

What is the mass of 0.513 mol Al2O3? Give your answer to the correct number of significant figures. (Molar mass of Al2O3 = 102.0 g/mol)0.513 mol Al2O3 = g Al2O3

The molar mass of water (H2O) is 18.02 g/mol. Yun has 0.025 mol of H2O for a laboratory experiment. How many grams of water does she have?

What is the mass of 2.50 mol of iron (II) hydroxide: Fe(OH)2?

How many moles of water (H2O) are present in a beaker containing 45.9 g H2O? Give your answer to the correct number of significant figures. (Molar mass of water = 18.02 g/mol)45.9 g H2O = mol H2O

Calculate the number of moles in 75.0 g of dinitrogen trioxide (N2O3).

Consider again the thermite reaction. If 0.0257 g Al react completely, what mass of Fe forms? Use the periodic table to find molar masses.Fe2O3 + 2Al Al2O3 + 2FeThe correct setup allows you to cancel terms to yield the mass of iron: 0.0257 gram upper A l with grams upper A l crossed out times StartFraction 1 mole upper A l with mole upper A l crossed out over 26.98 grams upper Al with grams upper A l crossed out EndFraction times StartFraction 2 moles upper F e with moles upper F e crossed out over 2 moles upper A l with moles upper A L crossed out EndFraction times StartFraction 55.85 grams upper Fe over 1 mole upper F e with mole upper F e crossed out EndFraction equals ? grams upper F e. What mass of Fe forms? Make sure to give your answer with the correct number of significant figures.A total of 0.0257 g Al forms 0.10641.435✔ 0.05320.213 g Fe.

The overall chemical reaction for photosynthesis is shown below:6CO2 + 6H2O C6H12O6 + 6O2What mass of glucose (C6H12O6) can form from 71.89 g CO2? (Molar mass of C6H12O6 = 180.18 g/mol; molar mass of CO2 = 44.01 g/mol)71.89 g CO2 = g C6H12O6

Consider again the reaction for photosynthesis: 6CO2 + 6H2O C6H12O6 + 6O2.Select the correct mole ratio to complete the calculation shown below. "1.00 gram upper O subscript 2 times StartFraction 1 mole upper O subscript 2 over 32.00 grams O 2 EndFraction times StartFraction ? over ? EndFraction times StartFraction 180.18 grams upper C subscript 6 upper H subscript 12 upper O subscript 6 over 1 mole upper C subscript 6 upper H subscript 12 upper H subscript 6 EndFraction equals x grams upper C 6 upper H 12 upper O 6.

What mass of water is required to react completely with 157.35 g CO2? (Molar mass of H2O = 18.02 g/mol; molar mass of CO2 = 44.01 g/mol)157.35 g CO2 = g H2O

What mass of oxygen forms from 71.89 g CO2? Use the periodic table to find molar masses.71.89 g CO2 = g O2

What mass of oxygen (O2) forms in a reaction that forms 15.90 g C6H12O6? (Molar mass of O2 = 32.00 g/mol; molar mass of C6H12O6 = 180.18 g/mol)15.90 g C6H12O6 = g O2