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.
![3. The Laboratory custodian prepared saturated NaNO solution of 10.9 M at 25°C.
How many grams of NaNO, are in 230 ml of the solution at the same temperature?
a) 195.5 g
b) 194.6 g
c) 196.5 g
d) 19.8 g
4. A beaker of 175 ml Of 0.950 M NaCI left uncovered for a period. If, by the end of the
time period, the volume of solution in the beaker has decreased to 137 ml (the volume
loss is due to water evaporation) What is the resulting concentration of the solution?
a.)1.21 M b) 12.1 M
c) 1.44 M
d) 1.21 M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F095c86f1-f375-46b4-9616-2bb8df62dcd9%2F1c0dfd31-e161-46cb-be34-35cfc62c7e5a%2Fp4at6y_processed.jpeg&w=3840&q=75)
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