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The colour change of those natural substances as a base/acid indicator 1.) Tea pigment 2.) Grape 3.) Turmeric Indicator 4.) Rhubarb 5.) Hibiscus flower 6.) Cranberry juice very urgent, thx alot!!!

One way of minimizing the greenhouse effect is to minimize the amount of carbon dioxide formed per kilojoule of energy produced. Arrange the following fuels in order of increasing amount of carbon dioxide per kilojoule of energy released. For each substance the amount of the energy released in...

disposal of smelly waste fermentation liquors after removal ethanol. what's the name of this "smelly thing" also can u explain for me plz.... thx alot >.<

how come ethanol could reduce greenhouse gas emmissions!! thx

explain the difference between ethanol and petrol. explain why petrol is a non-renewable resource. thx!!

Define the molar heat of combustion of ethanol. thx alot~