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The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass
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Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law
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What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th
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Other than moisture, what are the three major components of the air you breathe?...
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