7.104 When nitrogen dioxide (NO,) gas from car exhaust combines with water vapor in the air, it forms aqueous nitric acid (HNO3), which causes acid rain, and nitrogen oxide a. Write the balanced chemical equation. b. How many moles of each product are produced from 0.250 mole of H,O? c. How many grams of HNO3 are produced when 60.0 g of NO2 completely reacts? d. How many grams of NO, are needed to form 75.0 g of HNO,? gas. (7.4, 7.7, 7.8)

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A:

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A:

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A:

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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.