The mass (kg) of 4.6 x 10²¹ molecules of NO₂ is 351 grams.
<h3>What are molecules?</h3>
Molecules are two or more joined atoms by a chemical bond. It formed a substance that can be of similar or different molecules.
Mass is calculated by multiplying the moles and molar mass of the substance.
Mass = moles x molar mass
The number of molecules of NO₂ is 4.6 x 10²¹
To calculate the number of moles from given molecules, divide the
4.6 x 10²¹ / 6.023 x 10²³ = 7.637 x 10⁴³ moles
Our moles is calculated
The molar mass is 46 g/mol
Putting the value in the equation
mole = mass/molar mass
mass = moles x molar mass
7.637 x 10⁴ x 46 = 351 grams
Thus, the mass (kg) of 4.6 x 10²¹ molecules of NO₂ is 351 grams.
To learn more about mass, refer to the link:
brainly.com/question/9909261
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