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.
![لا توجد بطاقة BSIM
1.0 g XSO, and 1.0 g NH.CI are added to 100 ml 0.1 M NH3,
will a precipitate be obtained? Justify the answer by a computation of the
product [X+2][OH-12 and comparison of the value with the solubility-
product value.
16. At what pH will magnesium hydroxide begin to precipitate from a
0.01 M magnesium sulfate solution?
Ans. 9.5.
17. If 25 mg magnesium chloride is added to 100 ml 0.1 N ammonia, will
a precipitate be formed?
18. If 1 g ammonium chloride is added to the solution above, will a precipi-
tate be obtained?
19. How many milliliters of 2 M HNO, must be diluted to 400 ml so that
2.00 g silver acetate will completely dissolve in this volume?
20. 50 ml 0.4 M MGSO, and 50. mi 1.0 M NaOAc solutions are mixed. Is
there any precipitation of Mg(OH)2?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa71827f7-f7af-4b09-97dc-8da43be5dfef%2Fcc88631a-adec-4f41-a812-73fea3727a7b%2Fcm2mdj_processed.jpeg&w=3840&q=75)
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