7. Identify and describe the simple laboratory techniques that you could use to separate the
homogeneous and heterogeneous mixtures in the following cases.
a) A student has carried out a double-replacement reaction and wishes to separate the small
amount of precipitate from the rest of the reaction mixture.
b) A researcher has a solution of two liquids with different boiling points and wishes to separate
and retain the two liquids.
c) A researcher obtained a solid from filtration but it is wet from being rinsed with water. The
researcher wishes to dry the solid by removing the water.
d) A student wishes to separate the individual substances in ink from a water-washable marker.
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Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.
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7. Identify and describe the simple laboratory techniques that you could use to separate the
homoge...
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