PNG is an image file format, such as JPEG or BMP. One of the
differences between PNG and JPEG, is that PNG supports
transparency.
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Yes, naphthalene is soluble in chloroform. When added to chloroform, naphthalene dissolves because they have similar solubility characteristics.
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Naphthalene is not very soluble in water, meaning it does not dissolve easily in water. The solubility of naphthalene in water is very low.
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Naphthalene can be separated from sodium chloride by sublimation. When the mixture is heated, naphthalene will sublimate, turning from a solid to a gas, and can be collected separately from the solid sodium chloride.
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At standard temperature and pressure, naphthalene is a white
crystalline solid.