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Calculate the number of He atoms present in 18g of He (He = 4u).2.71 × 1024 atoms2.7 × 1023 atoms 1.34 × 1024 atoms 1.34 × 1023 atoms

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Solution 1

To calculate the number of atoms in a given mass of an element, you can use the formula:

Number of atoms = (Given mass / Molar mass) x Avogadro's number

Given:

  • The mass of He (Helium) is 18g
  • The molar mass of He is 4g/mol (given in the question as 4u, where u is the atomic mass unit)
  • Avogadr Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
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