Question

The gram molecular mass of co2 is the same as the gram molecular mass of ?

Answer 1

The gram molecular mass of $\text{CO}_2$ is the same as the gram molecular mass of $\boxed{4.)\;\text{C}_3\text{H}_8}$.

Further Explanation:

Gram molecular mass is the mass of one mole of the substance in grams. It is similar to molar mass.

The molar mass of $\text{CO}_2$ can be calculated as follows:

$\text{Molar mass of}\;\text{CO}_2=[1(\text{Atomic mass of})+2(\text{Atomic mass of O})]$                  …… (1)

Substitute 12.01 g for the atomic mass of C and 15.99 g for the atomic mass of O in equation (1).

$\begin{aligned}\text{Molar mass of}\;\text{CO}_2&=[1(12.01\;\text{g})+2(15.99\;\text{g})]\\&=43.99\;\text{g/mol}\\&\approx44\;\text{g/mol}\end{aligned}$  

1.) The molar mass of CO can be calculated as follows:

$\text{Molar mass of CO}=[1(\text{Atomic of mass C})+1(\text{Atomic mass of O})]$                 …… (2)

Substitute 12.01 g for the atomic mass of C and 15.99 g for the atomic mass of O in equation (2).

$\begin{aligned}\text{Molar mass of CO}&=[1(12.01\;\text{g})+1(15.99\;\text{g})]\\&=28\;\text{g/mol}\end{aligned}$  

2.) The molar mass of $\text{SO}_2$ can be calculated as follows:

$\text{Molar mass of}\;\text{SO}-2=[1(\text{Atomic mass of S})+2(\text{Atomic mass of O})]$                   …… (3)

Substitute 32.07 g for the atomic mass of S and 15.99 g for the atomic mass of O in equation (3).

$\begin{aligned}\text{Molar mass of}\;\text{SO}_2&=[1(32.07\;\text{g})+2(15.99\;\text{g})]\\&=64.05\;\text{g\mol}\end{aligned}$  

3.) The molar mass of $\text{C}_2\text{H}_6$ can be calculated as follows:

$\text{Molar mass of}\;\text{C}_2\text{H}_6=[2(\text{Atomic mass of C})+6(\text{Atomic mass of O})]$                   …… (4)

Substitute 12.01 g for the atomic mass of C and 1.008 g for the atomic mass of H in equation (4).

$\begin{aligned}\text{Molar mass of}\;\text{C}_2\text{H}_6&=[2(12.01\;\text{g})+6(1.008\;\text{g})]\\&=30.068\;\text{g/mol}\end{aligned}$  

4.) The molar mass of $\text{C}_3\text{H}_8$ can be calculated as follows:

$\text{mollar mass of}\;\text{C}_3\text{H}_8=[39(\text{Atomic mass of C})+8(\text{Atomic mass of H})]$                   …… (5)

Substitute 12.01 g for the atomic mass of C and 1.008 g for the atomic mass of H in equation (5).

$\begin{aligned}\text{Molar mass of}\;\text{C}_3\text{H}_8&=[3(120.1\;\text{g})+8(1.008\;\text{g})]\\&=44.094\;\text{g/mol}\\&\approx44\;\text{g/mol}\end{aligned}$  

Therefore the gram molecular mass of $\text{CO}_2$ is the same as that of $\text{C}_3\text{H}_8$.

Learn more:

1. Calculate the moles of chlorine in 8 moles of carbon tetrachloride: brainly.com/question/3064603
2. Calculate the moles of ions in the solution: brainly.com/question/5950133

Answer details:

Grade: Senior School

Chapter: Mole concept

Subject: Chemistry

Keywords: gram molecular mass, atomic mass, molar mass, CO2, CO, C3H8, C2H6, SO2.

Answer 2

The answer is 1. CO. A gram-molecular mass is defined as mass in grams numerically equal to the molecular weight of a substance or the sum of all the atomic masses in its molecular formula. Since CO2 and CO has both carbon and oxygen, the gram-molecular mass does not change. For a compound with carbon and oxygen, the molecular mass comes respectively from 12 (atomic mass of carbon) + (2 × 16) (atomic mass of oxygen), which is 44 g.