The molecular weight of 2-propanol ( C₃H₇OH ),known as rubbing alcohol,is ________ amu (rounded to one decimal place). A)59.1 B)29.0 C)60.1 D)12.0 E)34.0

Question

Quizplus · Accepted Answer

To determine the molecular weight of a compound, we need to add the atomic weights of all the atoms in the compound.

2-propanol has the molecular formula: C3H8O. 
- Carbon (C) has an atomic weight of 12.01 amu 
- Hydrogen (H) has an atomic weight of 1.01 amu 
- Oxygen (O) has an atomic weight of 16.00 amu

To calculate the molecular weight of 2-propanol, we can add the atomic weights of all the atoms in the compound:

Molecular weight = (3 x atomic weight of carbon) + (8 x atomic weight of hydrogen) + (1 x atomic weight of oxygen)
= (3 x 12.01 amu) + (8 x 1.01 amu) + (1 x 16.00 amu)
= 60.1 amu

Therefore, the correct answer is C.

The Molecular Weight of 2-Propanol ( C3H7OH ),Known as Rubbing

The Molecular Weight of 2-Propanol ( C₃H₇OH ),Known as Rubbing