JEE Main 2021 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2021 (Online) 1st September Evening Shift
Question
The number of atoms in 8g of sodium is x 1023. The value of x is ____________. (Nearest integer)
[Given : NA = 6.02 1023 mol1
Atomic mass of Na = 23.0 u]
[Given : NA = 6.02 1023 mol1
Atomic mass of Na = 23.0 u]
Enter your answer
Show full solutionCorrect answer: 2.09
Correct answer
2.09
Step-by-step explanation
Given, mass of Na = 8g
Molar mass of Na = 23 gmol1
Number of atoms
Number of atoms = 2.09 1023
x 2
Hence, answer is 2.
Molar mass of Na = 23 gmol1
Number of atoms
Number of atoms = 2.09 1023
x 2
Hence, answer is 2.
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