Question

To make saturated solution, 36 g of
sodium chloride is dissolved in 100 g of water at 293 k. Find its concentration at this temperature.​

Answer 1

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Mᴀss ᴏғ sᴏʟᴜᴛᴇ (sᴏᴅɪᴜᴍ ᴄʜʟᴏʀɪᴅᴇ)-36ɢʀᴀᴍ

Mᴀss ᴏғ sᴏʟᴠᴇɴᴛ (ᴡᴀᴛᴇʀ)-100ɢʀᴀᴍ

Mᴀss ᴏғ sᴏʟᴜᴛɪᴏɴ = (ᴍᴀss ᴏғ sᴏʟᴜᴛᴇ+ ᴍᴀss ᴏғ sᴏʟᴠᴇɴᴛ )

=36ɢ+100ɢ-136ɢʀᴀᴍ

∆ ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴ= ᴍᴀss ᴏғ sᴏʟᴜᴛᴇ /ᴍᴀss ᴏғ sᴏʟᴠᴇɴᴛ ×100

Sᴏ, ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴ =36 ɢʀᴀᴍ /135ɢʀᴀᴍ ×100

=26.47% (ᴀɴs)

Answer 2

Answer:

Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity. ... Such a burst flings star matter out into space but leaves behind the stellar core.