which of the following samples has the greatest number of atoms

20 million O2 molecules
0.1 mole of Fe
2.0 mole of Ar
100 g of Pb
5 g of He

3 answers

20 million O2 has 40 million O atoms.
0.1 mole Fe has 0.1 x 6.022E23 atoms.
2.0 moles Ar has 2.0 x 6.022E23
etc.
Hint:I would convert 100 g Pb and 5g He to moles and compare with the other moles.

20 million O2 molecules

2.0 mole of Ar

Ask a New Question or answer this question.

Similar Questions

Which of the following samples contains the greatest number of atoms.1) 100g of Pb 2) 5g of He 3) 2.0 moles of Ar 4) 0.1 mole of
1. 3 answers
Rank the following samples in number of atoms from least to greatest.a) 2 mol of K atoms b) 48 g of S c) 27 g of Be d) 50 g of
1. 1 answer
The Law of Conservation of Mass can be applied to chemical reactions in which the total number of ______ in the reactants must
1. 1 answer
The Law of Conservation of Mass can be applied to chemical reactions in which the total number of ______ in the reactants must
1. 1 answer