What mass of sodium chloride can be produced from 250g of chlorine and 154g Na? 2Na + Cl2 --> 2Naci A.391.79g
B.152.89g
C.554.36g
D256.5g

passing a magnet thought the

mixture , because iron gets attracted to magnet .

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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