Which of the following pairs have the same number of atoms ?

(i) 16 g of O_{2} (g) and 4 g of H_{2} (g)

(ii) 16 g of O_{2} and 44 g of CO_{2}

(iii) 28 g of N_{2} and 32 g of O_{2}

(iv) 12 g of C (s) and 23 g of Na(s)

Answers (1)

The answer are the options (iii) and (iv)

Explanation:

One mole is measured as the amount of a substance that equal number of atoms as contained in exactly 12 g of Carbon.

1 mole of C = 12g C

While 23 grams of Na (mass) = 1 mole of Na

28g N2 = 1 mole of nitrogen = 2 × atoms of nitrogen

This is 2 \times (6.022 \times 10^{23})atoms of nitrogen

32g O2 = 1 mole of oxygen = 2 \times (6.022 \times 10^{23}) atoms of oxygen

Most Viewed Questions

Preparation Products

Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 40000/-
Buy Now
Knockout NEET 2025

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 45000/-
Buy Now
NEET Foundation + Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 54999/- ₹ 42499/-
Buy Now
NEET Foundation + Knockout NEET 2024 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 3999/-
Buy Now
NEET Foundation + Knockout NEET 2025 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 3999/-
Buy Now
Boost your Preparation for JEE Main with our Foundation Course
 
Exams
Articles
Questions