The balanced chemical reactions are:
Further Explanation:
The following reactions will undergo double displacement where the metal cations in each compound are exchanged and form new products.
For reaction 1, the compounds involved are nitrates and chlorides. To determine the states of the products, the solubility rules for nitrates and chlorides must be followed:
- All nitrates are generally soluble.
- Chlorides are generally soluble except AgCl, PbCl2, and Hg2Cl2.
Therefore, the products will have the following characteristics:
- silver chloride (AgCl) is insoluble
- sodium nitrate (NaNO3) is soluble
For reaction 2, the compounds involved are phosphates and chlorides. The solubility rules for phosphates and chlorides are as follows:
- Phosphates are generally insoluble except for Group 1 phosphates.
- Chlorides are generally soluble except for AgCl, PbCl2, and Hg2Cl2.
Hence, the products of the second reaction will have the following characteristics:
- potassium chloride (KCl) is soluble
- magnesium phosphate is insoluble
Insoluble substances are denoted by the symbols (s) in a chemical equation. The soluble substances are denoted as <em>(aq).</em>
Learn More
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Keywords: solubility rules, precipitation reaction
Answer:
Heat change = 3.77kJ
Explanation:
T1 = 25°C
Mass = 65g
T2 = 30°C
specific heat capacity of water = 4.184J/g°C
Heat energy = ?
Heat energy = MC∇T
Heat energy (Q) = MC(T2 - T1)
Q = 65 * 4.184 * (30 - 15)
Q = 251.04 * 15
Q = 3765.6J
Q = 3.77KJ
The heat change during the reaction was 3.77kJ
There are 7 characteristics of living things that all things must have to be considered living.
1. All living things are made up of one or more cells.
2. All living things reproduce.
3. All living things maintain homeostasis
4. All living things require energy
5. All living things grow.
6. All living things respond to stimuli in their environment.
7. All living things adapt to their environment.
Answer is: from strongest to weakest attractions: ionic forces, covalent forces, hydrogen forces, Van der Waals forces.
Ionic bond is the electrostatic attraction between oppositely charged ions; ionic bond is very strong.
For example, sodium chloride (NaCl) has ionic bond between sodim cation and chlorine anion.
Covalent bond is bond between nonmetals. Hydrogen and oxygen are nonmetals.
For example, in water, atoms of hydrogen (H) and oxygen (O) are connected by polar covalent bonds.
Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.
For example, because of hydrogen bonds, water has higher melting and boiling temperatures than H₂S.
There are two kinds of Van der Waals forces: weak London dispersion forces and stronger dipole-dipole forces.