Solid lithium hydroxide (LIOH) is used in space vehicles to remove the carbon dioxide gas exhaled by the astronauts. The hydroxide reacts with CO, to form solid lithium carbonate (Li,CO,) and water. How many grams of carbon dioxide can be absorbed by 100.0-g of lithium hydroxide? 183.8-g 91.88-g 367.5-g 27.21-g

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A: %mass of Aceticacid = 7.3 %  Mass of sample = 242 g Mass of Acetic acid= 242 × 7.3/100    = 17.7 g

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Q: 39. ** Questions 37 through 39 use the reaction: 2 Fe (s) + 6 HCI (aq) → 2 FeCl3 (aq) + 3 H2 (g)…

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.