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.
![13. (a) How many moles of Ca(NO,), are present in the 124.0 g sample of this sub
(b) How many formula units are present in the 124.0 g of Ca(NO3),?
(c) How many nitrate ions are present in the 124.0 g of Ca(NO;),?
(Must show complete work including calculation of molar mass)
14. Calculate the moles and the mass of solute(g) in 362.0 mL of 4.00 M Na,CO;?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F977d0eb4-77bb-4f83-9f89-b44809f8e7cc%2Ff1bd99d6-7e3f-4bcb-8395-e81eaddeb70f%2Fjw9toa_processed.jpeg&w=3840&q=75)
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