The constitution gives which of the following powers to the vice president?
a. exercise broad executive power
b. lead his or her political party
c. preside over the senate
d. the power to declare war

C. preside over the Senate

Explanation:

The vice-president of the Republic is elected simultaneously with the president, on a single slate, and both take office in a session of the National Congress, making a commitment to maintain, defend and comply with the Constitution, observe the laws, promote the general good of the Brazilian people. , sustain the Union, the integrity and independence of the country.

The Constitution defines the substitution of the president as the duties of the vice president of the Republic, in case of illness or travel, for example, or when the position becomes vacant. He can also perform special missions entrusted to him by the president, in addition to being able to preside over the senate.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.