Laboratory Directions for Elementary Chemistry Designed to Accompany a Textbook
The book Laboratory Directions for Elementary Chemistry Designed to Accompany a Textbook was written by author Helen Isham Mattill Here you can read free online of Laboratory Directions for Elementary Chemistry Designed to Accompany a Textbook book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Laboratory Directions for Elementary Chemistry Designed to Accompany a Textbook a good or bad book?
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Add solutions of sodium and calcium salts to different portions of this soap solution. Which would be more objectionable in water for laundry purposes, sodium or calcium bicarbonate? b. Place equal quantities of animal charcoal in each of two test-tubes; to one add 10 c. C. Of hot soap solution, to the other 10 c. C. Of hot water, filter each and compare the filtrates. The soap solution tends to combine with the carbon to form an adsorption compound which reduces the tendency for the carbon to ...stick to other materials, here the filter paper. This property partly explains the action of soap in cleansing. c. To 10 c. C. Of soap solution add dilute hydrochloric acid to acid reaction. Warm gently until the white precipitate melts and floats on the surface. What is it? 66. Methane. a. Grind together one part of sodium acetate with four parts of soda lime (quick lime and sodium hydroxide) and place the mixture in a hard glass test-tube fitted with a delivery tube. Incline the tube so that water driven from the contents on heat- ing will not run back upon the hot part of the glass, and warm, collecting the gas evolved by displacement of water.
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