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.
Activity 1.3: Calculate the following different ways of expressing concentration of solutions.
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- What is the molarity of a solution containing 0.46 mole of solute in 2.0 kg water?
![What I Can Do
Activity 1.3: Calculate the following different ways of expressing concentration of
solutions.
1. If 100 L of a gas mixture over a metropolitan area contains 0.006
Oxygen L, how many ppm of CO is present?
2. A solution is prepared by dissolving 10g of glucose, CSH12O6 in 100g of
water. What is the percentage by mass of glucose in the solution?
3. What is the molarity of a solution made when 32.7 g of NaOH are
dissolved to make 445 mL of solution?
4. As an example consider 5 g sugar dissolved in 20 g of water. What is
the percentage by volume concentration of sugar in this solution?
5. What is the molarity of a solution containing 0.46 mole of solute in 2.0
kg water?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F407018ab-cf7e-46a5-b0c6-d6cdc055f3e5%2Facc027ae-2852-4548-8c9c-96021a2105de%2Fl9q4j2m_processed.png&w=3840&q=75)
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