Exam 9: Stoichiometry and the Mole

Determine the percent yield of an experiment in which 1.00 mole of NaHCO₃ was consumed and 22.0 g of carbon dioxide was isolated. NaHCO₃ → Na₂CO₃ + CO₂ + H₂O

The molecular formula is the simplest formula using whole numbers.

The balanced equation involves the corresponding coefficients ________. H₂SO₄ + Cu → SO₂ + H₂O + CuSO₄

One molecule of water contains ________.

0.540 g of bromine combine with 0.858 g of iodine to yield a compound X. The empirical formula of the compound described above is ________.

An iron oxide is 70.0% in iron. Its empirical formula is ________.

Which of the following compounds has its combined carbon and oxygen composition equal to 76.7%?

Formaldehyde, CH₂O, and glucose, C₆H₁₂O₆, have the same empirical formula, which happens to be equal to the molecular formula of formaldehyde.

Which of the following has a molar mass equal to 133?

The theoretical number of moles of water produced from 2 moles of C₂H₆O is ________. C₂H₆O + O₂ → CO₂ + H₂O

The percent yield of an experiment in which 2.0 moles of NaN₃ was used and 21 g of nitrogen was isolated is ________. NaN₃ → Na + N₂

An iron oxide is 77.7% in iron. Its empirical formula is ________.

The number of atoms in 2.4 g of magnesium metal is ________.

The theoretical number of carbon dioxide moles produced from 6 moles of NaHCO₃ is ________.' NaHCO₃ → Na₂CO₃ + CO₂ + H₂O

The minimum number of moles of oxygen needed to completely consume 4 moles of C₃H₈O is ________. 2 C₃H₈O + 9 O₂ → 6 CO₂ + 8 H₂O

The ingredients to make 50 servings of fruit punch are: ∙ 2-1/2 cups white sugar ∙ 6 cups water ∙ 2 (3-ounce) packages strawberry flavored gelatin mix ∙ 1 (46-fluid-ounce) can pineapple juice ∙ 2/3 cup lemon juice ∙ 1 quart orange juice ∙ 2 (2-liter) bottles lemon-lime flavored carbonated beverage How many servings of punch can you make using the above recipe, if you have 2 gallons of pineapple juice, 8 (2-liter) bottles of lemon-lime flavored soda and 2 gallons of orange juice? Assume you have plenty of all the other ingredients.

A sample of calcium that contains twice Avogadro's number of atoms has a mass of ________.

A sample of calcium that contains one-half Avogadro's number of atoms has a mass of ________.

What is the mass in grams of 1.000 mole of P₂O₅?

Match each compound with its corresponding percent of nitrogen. -NO?