Alchemy is a branch of ancient knowledge that states that the only three essential substances in nature are salt, sulfur, and mercury. Which of these best explains whether alchemy is a science or pseudoscience? (4 points)
It is pseudoscience because ancient knowledge is mystical yet reliable.
It is pseudoscience because there are at least 118 known elements in nature.
It is a science because sulfur and mercury are known to be important elements.
It is a science because salt is a commonly used compound in several laboratory experiments.

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.