Question

.Calculate the mass of 100 molecules of copper carbonate. [Atomic mass of Cu = 63.5 u]​

Answer 1

Answer:

ᴍᴏʟᴇᴄᴜʟᴀʀ ᴍᴀss ᴏғ ᴀ ᴄᴏᴍᴘᴏᴜɴᴅ ɪs ᴛʜᴇ sᴜᴍ ᴏғ ᴀᴛᴏᴍɪᴄ ᴍᴀssᴇs ᴏғ ᴇᴀᴄʜ ᴇʟᴇᴍᴇɴᴛ ᴘʀᴇsᴇɴᴛ ɪɴ ᴛʜᴇ ᴍᴏʟᴇᴄᴜʟᴇ. 

ᴍᴏʟᴇᴄᴜʟᴀʀ ᴍᴀss = ᴀᴛᴏᴍɪᴄ ᴍᴀss ᴏғ ᴄᴜ + ᴀᴛᴏᴍɪᴄ ᴍᴀss ᴏғ s + (9 × ᴀᴛᴏᴍɪᴄ ᴍᴀss ᴏғ ᴏ) + (10 × ᴀᴛᴏᴍɪᴄ ᴍᴀss ᴏғ ʜ) =63.5+32+9×16+10×1=249.5 ɢᴍ/ᴍᴏʟᴇ

Explanation:

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