Chem Mantra

The total number of protons in 8.4 g of \(\mathrm{MgCO_3}\) is (NA = 6.021023) :

Posted by Chem Mantra
Solved
Mole conceptBasic stoichiometry, POAC, percent yield & limiting reagentMEDIUMJEE Chemistry
The total number of protons in 8.4 g of \(\mathrm{MgCO_3}\) is (NA = 6.021023) : **Options:** - **A.** [object Object] - **B.** [object Object] - **C.** [object Object] - **D.** [object Object] --- **Difficulty:** MEDIUM | **Chapter:** Mole concept | **Topic:** Basic stoichiometry, POAC, percent yield & limiting reagent

Official Solution

## ✅ Correct Answer: **B** ### 📖 Detailed Explanation: This question uses mole concept & stoichiometry. Convert all given quantities into moles using n = given amount/molar mass, use Avogadro's number where needed to get particles, and then compare with the options; this matches option B. --- *This is an official solution provided by Chem Mantra. For more chemistry questions and solutions, explore our [question bank](/courses).*

Solution verified by Chem Mantra faculty

Want More Practice Questions?

Access thousands of JEE Chemistry questions with detailed solutions

Explore CoursesBrowse More Questions

Related Topics

Mole conceptBasic stoichiometry, POAC, percent yield & limiting reagentMEDIUMJEE Chemistry