Please help me with this question of mole - Chemistry - Some Basic Concepts of Chemistry

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Please help me with this question of mole

Md Nazrullah · Accepted Answer

Dear student,
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5f0499c1ee7f9%20jpg"
style="width: 816px; height: 1023px;">
Regards