Crystalline solids
1. The internal arrangement of particles is well defined. The molecules are lined up in a very particular order.
<span>2. They possess sharp melting points. </span>
3.<span> NaCl and NaF are examples of Crystalline solids.
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<span>Amorphous solids </span>
1- The internal arrangement of particles is not well defined. Molecules are not in a particular arrangement. There is no regularity in their form.
<span>2. </span><span>They do not possess sharp melting points. </span>
3. Glass, rubber and plastics are examples of Amorphous solids..
Explanation:
At low temperatures (below the glass transition temperature) crystalline polymers are rigid like glass. This happens because all the polymer chains are perfectly arranged, all the polymer is in the crystalline form. On the other hand, when the temperature raises, upper the glass transition temperature, some polymer chains start to get loose and form some amorphous regions in between the crystalline regions of the polymer. This condition makes the polymer more flexible.
The balanced chemical reaction is written as:
<span>Cu +2AgNO3 → Cu(NO3)2 + 2Ag
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We are given the amount of silver nitrate to be used for the reaction. This value will be the starting point of our calculations. It is as follows:
4.00 g AgNO3 ( 1 mol / 169.87 g ) ( 1 mol Cu / 2 mol AgNO3 ) ( 63.456 g / 1 mol ) = 0.747 g Cu
Enthalpy is the energy needed for the phase change called vaporization. It is the energy needed to break the bonds of the liquid molecules so that it can be converted to its gaseous form. Therefore, the greater the value of the enthalpy is, the stronger are the bonds of the substance. <em>Therefore, the answer is Aluminum.</em>
Answer:
It is balanced
Explanation:
There is 1 Carbon, 2 Hydrogen, and 1 Oxygen on the right and 1 Carbon, 1 Oxygen and 2 Hydrogen on the left. This equation is balanced.