Molecular Formulas

Molecular formula mass = 192

Molecular Formula = ?

• C₄F₈

• C₄F

• CF₈

• C₂F₄

Phenyl magnesium bromide is used as a reagent in organic synthesis. Determine its molecular formula if its molar mass is 181.31 g/mol and it contains 39.75% C, 2.78% H, 13.41% Mg, and 44.07% Br (these are in the correct order).

• C₁₂H₁₀Mg₂Br₂

• CHMgBr

• C₆H₅MgBr

• C₃H_2.5MgBr

What is the molecular formula for a compound with the empirical formula: CaCl₂  and a molecular mass of 330g.

• Ca₂Cl₄

• Ca₃Cl₆

• Ca₃Cl₉

• Ca₃Cl₅

What is the molecular formula for a compound with the empirical formula: CaCl₂ and a molecular mass of 220g.

• Ca₂Cl₄

• Ca₃Cl₆

• Ca₃Cl₉

• Ca₃Cl₅

A compound has the molar mass of 170.0 g/mol and an empirical formula of SiF₃. The compounds molecular formula is

• SiF₃

• Si₂F₆

• Si₅F₁₅

• Si₄F₁₂

Gives the actual number of atoms of each element in a molecule of a compound.

• Empirical Formula

• Molecular Formula

• Stoichiometry

• Chemical Reaction

A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound

• Coefficient

• Subscript

• Reactant

• Product

Tags

NGSS.HS-PS1-7