Abstract
.Science projects on charcoal recycling. The waste material to bite compounds to use. The experiment study into 2 part; when 1 study the proper ratio of ingredients.The ratio of the charcoal residue:Powder: water, different heat is different. By the appropriate mix ratio is 2: 1:1 minimum time to make the water volume 50 ml high temperature 80 C and within the time 4 minutes equal. Such rates can provide maximum heat 4100 calories when 2 species of starch มีผลต่อประสิทธิภาพ of charcoal recycling.Minimum time to make the water volume 50 ML high temperature 80C and within the time 4 minutes equal. When measuring the heat energy. Corn starch can provide energy most 4700 high calorie
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