A teacher has a beaker containing a mixture of iron filings (tiny pieces of iron) and sand. He challenges his class to develop a way to separate the iron filings and the sand.
Which method will separate the iron filings from the sand?
A. Add water to the mixture and stir well. Then let the water evaporate. The iron filings will be left behind.
B. Pass a magnet through the mixture. The iron filings will stick to the magnet. The sand will be left behind,
C. Shake the mixture until the iron filings rise to the top. Then scoop off the Iron filings. The sand will be left behind.
D. Add water to the mixture and stir well. Then pour it through a filter. Only the iron filings will go through the filter. The sand will be
left behind

A6.10 m nacl can be made by adding [x]g of nacl to a container and making the volume of water up to the 1.00 l line

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