The Question is from neet-chemistry basic-chemistry-concepts mole-concept, and it was created by the author THIRUPATHI REDDY

Question

A mixture of $CO_2$ and $N_2$ gases contains 0.44 g of $CO_2$ and 0.56 g of $N_2$.  The total number of moles of gases in the mixture is:

THIRUPATHI REDDY · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Mole calculations
 **Related Topics**: Gas mixtures, molar mass
 **Prerequisites**: Understanding of moles, molar mass, and how to calculate moles from mass.
## SOLUTION PATHWAY
**Given Information**:
  Mass of $CO_2$ = 0.44 g
  Mass of $N_2$ = 0.56 g
  Molar mass of $CO_2$ = 44 g/mol
  Molar mass of $N_2$ = 28 g/mol
**Method & Steps**:
 1. Calculate the number of moles of $CO_2$:
  Reasoning: Use the formula:  $moles = \frac{mass}{molar\ mass}$ 
  Formula/Rule: $n = \frac{m}{M}$ 
  Working: $n_{CO_2} = \frac{0.44\ g}{44\ g/mol} = 0.01\ mol$
 2. Calculate the number of moles of $N_2$:
  Reasoning: Use the same formula as above.
  Working: $n_{N_2} = \frac{0.56\ g}{28\ g/mol} = 0.02\ mol$
 3. Calculate the total number of moles:
  Reasoning: Add the moles of $CO_2$ and $N_2$ together.
  Working: Total moles = $n_{CO_2} + n_{N_2} = 0.01\ mol + 0.02\ mol = 0.03\ mol$
  Result: 0.03 moles
  Verification: The individual mole calculations are straightforward and adding them gives the total number of moles.
 ## OPTION ANALYSIS
A :x: 0.01 moles is only the number of moles of $CO_2$.
B :x: 0.02 moles is only the number of moles of $N_2$.
C ✓: 0.03 moles is the correct total number of moles.
D :x: 0.04 moles is incorrect; it's not the sum of the moles of each gas.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Forgetting to convert grams to moles: Remember to always use the molar mass to convert the given mass into moles.
  2.Adding masses instead of moles:  Moles are additive, not masses.  You must calculate the moles of each gas before adding them.
 **Quick Tips**:
  1.Write down the given information and the formulas clearly before starting the calculation.
  2.Double-check your units and calculations to avoid errors.

THIRUPATHI REDDY · Answer

0.01 moles

THIRUPATHI REDDY · Answer

0.02 moles

THIRUPATHI REDDY · Answer

The correct Option is "0.03 moles"

THIRUPATHI REDDY · Answer

0.04 moles

NEET Chemistry Some Basic Concepts in Chemistry Mole Concept MCQs

Select Topic

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

NEET Subjects

Our Bots

Company