The correct answer is B. Antoine-Laurent de Lavoisier was a French chemist, biologist and economist who discovered <em>the law of conservation of matter</em> in 1785.
This law states that during a chemical reaction, <u>the total mass in the system remains constant</u>, that is, the mass consumed of the reactants is equal to the mass of the products obtained.
This would be Majority Leader.
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Taft was supposed to be a progressive but soon after taking office he realized that he couldn't please the progressives and the conservatives so he chose to do what he thought was best for the country.
He tried to fix the antitrust laws and not the labor laws in the US.
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