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Answer to Question #68461 in General Chemistry for emmanuel
Question #68461
Question 1 : Which of the following descriptions is correct?
a mixture consists of two or more pure substances which can only be separated by chemical methods
a colloid is a 'cloudy' mixture containing particles which will not easily settle out when the colloid is left standing
a suspension contains particles which will not settle out if the suspension is left standing
a solution consists of a solvent dissolved in a solute
a mixture consists of two or more pure substances which can only be separated by chemical methods
a colloid is a 'cloudy' mixture containing particles which will not easily settle out when the colloid is left standing
a suspension contains particles which will not settle out if the suspension is left standing
a solution consists of a solvent dissolved in a solute
Expert's answer
In contrast to the coarse particle systems (suspensions, emulsions, foams, etc.), particle size which is typically less than 10 -4 cm colloidal particles involved in an intense Brownian movement and not sedymentuyut field force of gravity. Because colloidal mixture contains particles that will not easily subside.
Answer: a colloid is a "cloudy" mixture containing particles which will not easily settle out when the colloid is left standing.
Answer: a colloid is a "cloudy" mixture containing particles which will not easily settle out when the colloid is left standing.
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Question 4 : Which of these terms is not used to describe a solid which remains behind during a separation process? filtrate residue solution sediment Question 5 : Which statement is true? More than one of these is true As temperature goes up, the solubility of gases goes up As temperature goes up, the solubility of solids goes up. As temperature goes down, the solubility of solids goes up
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