Chemistry, 29.06.2019 04:10 2019reynolds
Which of the following could result from a substance that undergoes a physical change?
a) its chemical composition is altered.
b) it has an irreversible change.
c) it forms a new substance.
d) its shape is altered.
Answers: 2
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Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent
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Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o
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What is the oxidation state of an individual bromine atom in nabro3?
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Which substance—wood or silver—is the better thermal conductor? a thermal conductor is a material that requires very little heat energy to change its temperature. explain your answer.
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Which of the following could result from a substance that undergoes a physical change?
a) its...
a) its...
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