how many atoms are there in 5cao
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Heya....
here is the process by which u will get ur answer....
1 mole of Hydrogen consists of 6.023*10^23 atoms. So 0.25 moles of Hydrogen consists of 1.50575*10^23 atoms. 1 mole is about 6,022 140 857(74) × 10^23 things (atoms, molecules, …) so divide it by 4 to get your answer.
hope it helps...
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