Chemistry Mole

C₄H₆ What is the empirical formula?

• CH

• CH₃

• C₂H₃

• C₄H₆

C₂H₄ What is the empirical formula?

• CH

• CH₂

• C₄H₂

• C₂H₄

Tags

NGSS.MS-PS1-1

S₂O₈ What is the empirical formula?

• S₂O₈

• SO

• SO₄

• S₈O₂

C₂H₆O What is the empirical formula?

• CHO

• C₂H₆O

Tags

NGSS.MS-PS1-1

P₃O₄ What is the empirical formula?

• PO

• P₃O₄

• P₄O₃

Tags

NGSS.MS-PS1-1

Find the empirical formula for a compound which contains 32.8% chromium and 67.2% chlorine.

• CrCl

• CrCl₃

• Cr₃Cl

• Cr₂Cl₆

Tags

NGSS.HS-PS1-7

A compound containing 92.3 percent carbon and 7.7 percent hydrogen. What is the empirical formula?

• CH

• CH₂

• C₂H

• C₂H₂

When calculating the empirical formula the mole ratio is given as follows: H₁O_3.5 What will the EF be?

• H₁O_3.5

• HO_3.5

• HO₄

• H₂O₇

Which of the following statements regarding the mole is INCORRECT?

• A mole is a unit of quantity equal to 6.02 x 10²³ particles.

• The number of particles in a mole is known as Avogadro’s number.

• A mole of particles of an element is numerically equal to the atomic mass of the element.

• none of the above

Tags

NGSS.HS-PS1-7

Is this the correct conversion factor you would use if you wanted to determine the number of atoms in 15.1 moles of NaCl?

• Yes, it is the correct conversion

• No, it is not the correct conversion