Question

Is molar mass same as atomic mass? If not explain how to calculate molar mass with an example

Answer 1

Answer:

the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. the molar mass is computed from the standard atomic weights and is thus a terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth. The molar mass is appropriate for converting between the mass of a substance and the amount of a substance for bulk quantities

Answer 2

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Mᴏʟᴀʀ ᴍᴀss ɪs ᴛʜᴇ ᴍᴀss ᴏғ ᴏɴᴇ ᴍᴏʟᴇ ᴏғ ᴀ sᴜʙsᴛᴀɴᴄᴇ. Aᴛᴏᴍɪᴄ ᴍᴀss ɪs ᴛʜᴇ ᴍᴀss ᴏғ ᴏɴᴇ ɪɴᴅɪᴠɪᴅᴜᴀʟ ᴜɴɪᴛ ᴏғ ᴀ sᴜʙsᴛᴀɴᴄᴇ.

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Sᴛᴇᴘ 1. Mᴀᴋᴇ ᴜsᴇ ᴏғ ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ғᴏʀᴍᴜʟᴀ ᴛᴏ ᴅᴇᴛᴇʀᴍɪɴᴇ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴀᴛᴏᴍs ᴏғ ᴇᴀᴄʜ ᴇʟᴇᴍᴇɴᴛ ɪɴ ᴛʜᴇ ᴄᴏᴍᴘᴏᴜɴᴅ.

Sᴛᴇᴘ 2. Mᴜʟᴛɪᴘʟʏ ᴛʜᴇ ᴀᴛᴏᴍɪᴄ ᴡᴇɪɢʜᴛ ᴏғ ᴇᴀᴄʜ ᴇʟᴇᴍᴇɴᴛ ᴡɪᴛʜ ɪᴛs ɴᴜᴍʙᴇʀ ᴏғ ᴀᴛᴏᴍs ᴘʀᴇsᴇɴᴛ ɪɴ ᴛʜᴇ ᴄᴏᴍᴘᴏᴜɴᴅ.

Sᴛᴇᴘ 3. Aᴅᴅ ᴜᴘ ᴀʟʟ ᴀɴᴅ ᴀssɪɢɴ ᴜɴɪᴛ ᴀs ɢʀᴀᴍs/ᴍᴏʟᴇ.  

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Wʜᴀᴛ ɪs ᴛʜᴇ ᴍᴏʟᴀʀ ᴍᴀss ᴏғ sᴏᴅɪᴜᴍ ᴄᴀʀʙᴏɴᴀᴛᴇ, Nᴀ2CO3 ?

Sᴏʟᴜᴛɪᴏɴ: Sɪɴᴄᴇ sᴏᴅɪᴜᴍ ᴄᴀʀʙᴏɴᴀᴛᴇ ᴄᴏɴᴛᴀɪɴs ᴛᴡᴏ ᴀᴛᴏᴍs sᴏᴅɪᴜᴍ, ᴏɴᴇ ᴀᴛᴏᴍ ᴏғ ᴄᴀʀʙᴏɴ ᴀɴᴅ ᴛʜʀᴇᴇ ᴀᴛᴏᴍs ᴏғ ᴏxʏɢᴇɴ. Tʜᴇ ᴍᴏʟᴇᴄᴜʟᴀʀ ᴡᴇɪɢʜᴛ ᴡᴏᴜʟᴅ ʙᴇ

Nᴀ : 2 x 23.0 =  46

C : 1 x 12.0 = 12

O : 3 x 16 = 48

Wʜᴇɴ ᴡᴇ ᴀᴅᴅ ᴜᴘ ᴛʜᴇ ᴛᴏᴛᴀʟ ᴠᴀʟᴜᴇs ɪ.ᴇ, 46 + 12 + 48 = 106

Tʜᴇʀᴇғᴏʀᴇ, ᴛʜᴇ ᴍᴏʟᴀʀ ᴍᴀss ᴏғ Nᴀ2CO3 ɪs 106 ɢ/ᴍᴏʟᴇ.