BRAINLIEST FOR CORRECT ANSWER In a reaction the mass of a reactant decreases by 58g in 233 seconds. What is the rate?
In a reaction the mass of a reactant decreases by 0.43g in 80 seconds. What is the rate?
In a reaction the mass of a product increases by 3kg in 210 seconds. What is the rate?

Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. one of these isomers has a heat of hydrogenation of 101 kj/mol (24.1 kcal/mol), and the heat of hydrogenation of the other is 113 kj/mol (27.1 kcal/mol). match the heat of hydrogenation with the appropriate dihydronaphthalene.

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Is powdered sports drink ionic or covalent ? 10pts !