Empirical and Molecular Formulas CW

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

• Molecular Formula
• Chemical Formula
• Empirical Formula 
• Distance Formula

What is the empirical formula for C₄H₆?

• CH

• CH₃

• C₂H₃

• C₄H₆

What is the empirical formula for N₆S₉?

• NS

• N₃S₂

• N₂S₃

• N₁S_1.5

Which pair has the same empirical formula?

• NaCrO₄ and Na₂Cr₂O₇
• C₂H₄O₂ and C₆H₁₂O₆
• C₃H₆O₃ and C₂H₆O₂
• CH₄ and C₂H₆

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

C₂H₆O

Which is the correct empirical formula

• CHO

• C₂H₆O

• C₄H₁₄O₂

• None

How many Carbons "C" are in C₁₈H₃₄O₃

• 18

• 34

• 3

• 37

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

• K₂SO₄ 
• K₈SO₁₆
• K₈S₄O₈ 
• K₈S₄O₁₆ 

If the empirical formula is SO₂ and the molecular formula has a mass of 192.21 g/mol, what will the subscript be on the O in the molecular formula?

• 2

• 3

• 6

• 8