Empirical + Molecular Formula Quick check

What is the molecular formula for a compound with the empirical formula: K₂SO₄ and a molecular mass of 696g.

• K₂SO₄ 
• K₈SO₁₆
• K₈S₄O₈ 
• K₈S₄O₁₆ 

Whats the empirical formula of a molecule containing 18.7g of Lithium, 16.3g of Carbon and 65.0g of oxygen?

• CO₂Li₃

• Li₂CO₃

• Li₃CO₂

• LiCO₅

What is the molecular formula if the empirical formula is CH₂O and the molecular molar mass is 180.18?

• CH₂O
• C₂H₄O₂
• C₄H₈O₄
• C₆H₁₂O₆

What is the molecular formula of a compound with an empirical formula of C₂OH₄ and a molar mass of 88 grams per mole?

• C₂O₄H₈
• C₈O₂H₄
• C₄O₂H₈
• C₄O₈H₂

A formula with the lowest whole # ratio of elements in a compound is called

• empirical formula
• chemical formula
• covalent formula
• molecular formula

A chemical formula that shows the actual # and kinds of atoms present in one molecule of a compound is called_________

• ionic formula
• covalent formula
• empirical formula
• molecular formula

C₆H₆

• Empirical
• Molecular

Na₂S₂O₃

• Empirical
• Molecular

Epinephrine (adrenaline) is a hormone secreted into the bloodstream in times of stress. It contains 59.0g C, 7.15g H, 26.20 g O, 7.65g N and has a molar mass of 183 g/mol. What is its molecular formula?

• C₉H₁₃NO₃

• C₅H₁₁N₃O₂

• C₈H₁₂NO₂

• C₇H₉N₂O