Question

calculate the number of atoms and molecules in7gram of p4​

Answer 1

Explanation:

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Answer 2

Answer:

The molecule P4 has four ‘P’ atoms in it arranged in a tetrahedron. The molecular weight is 123.895 g/mol.

Here we considering 7 grams.

7 g P4/123.895 g/mol = 0.0564 moles of P4.

This case  a mole, there are 6.023 * 10^23 ‘units’ which can be atoms or molecules

0.0564 moles of P4 * 6.023 * 10^23 = 0.339 * 10^23 P4 molecules

In a P4, there are four atoms so

0.339 * 10^23 P4 molecules * 4 atoms/P4 = 1.356 * 10^23 atoms.