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Here we give you 70 fun Halloween trivia questions and answers to test your knowledge. Some of the questions are easy while others are more challenging for adults and kids alike.
Test your knowledge of October 31 with these Halloween trivia questions—answers included. The post 50 Halloween Trivia Questions and Answers for a Night of Spooktacular Fun appeared first on ...
Halloween Trivia Questions and Answers. Question #1: Where does the term "jack o'lantern" come from? Answer: The term "jack o'lantern" originates from an Irish folktale about a cheap man named ...
Complete solubility occurs when the solvent and solute have the same valency. [2] A metal is more likely to dissolve a metal of higher valency, than vice versa. [1] [3] [4] The solute and solvent should have similar electronegativity.
However, for aqueous solutions, the Henry's law solubility constant for many species goes through a minimum. For most permanent gases, the minimum is below 120 °C. Often, the smaller the gas molecule (and the lower the gas solubility in water), the lower the temperature of the maximum of the Henry's law constant.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Answer: Halloween was known as "All Hallows’ Eve” until 1773, when the Scots began referring to it as Hallow-e’en. The first known use of the word is in the poem “Halloween ," written in 1786
The tables below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure. Units of solubility are given in grams of substance per 100 millilitres of water (g/(100 mL)), unless shown otherwise. The substances are listed in alphabetical order.