The diagram provided here shows the reactants and the products of a common chemical reaction. The line on the graph behind them represents the energy of a system as the reaction progresses. Which of the following conclusions is best supported by the information provided? O Because there was a change in energy, the equation must not be balanced
O the overall mass of the system increased when the reaction occurred
O This reaction required the addition of energy from the surroundings
O During the reaction the energy was converted to mass, and, therefore, was lost

What are transitions between a liquid and gas called? identify which way they are transitioning

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.