3 covalent bonds (there are 2 electrons in the first orbital and 5 in the second. You still have room for three more)
Answer:
C-O: polar covalent
Mg-F: ionic
Cl-Cl: nonpolar covalent
Explanation:
Ionic bonds are formed between an atom of a metallic element and another atom of a non-metallic element. Thus, Mg-F is an ionic bond, in which Mg is the metal and F is the nonmetal.
Covalent bonds are formed between two non-metallic elements. So, C-O and Cl-Cl are covalent bonds, because C, O, and Cl are nonmetals.
In C-O, the atom of oxygen (O) has more electronegativity than the atom of carbon (C). Thus, O will attract the electrons with more strength and a difference in charge will be established between the two bonded atoms. So, this covalent bond is polar.
In Cl-Cl, both atoms have the same electronegativity because they are from the same chemical element (Cl). Thus, this bond is nonpolar.
Answer:
Explanation:
Hello.
In this case, for this calorimetry problem, since the acetylene is burned into the calorimeter causing a temperature increase, we can infer that the combustion of acetylene releases heat which is absorbed by the calorimeter, therefore, the following equation can be written:
Which can be written in terms of the energy of combustion and moles of the acetylene and the heat capacity and temperature change of the calorimeter:
Thus, since the molar mass of acetylene is 26.04 g/mol, the resulting energy of combustion of the acetylene turns out:
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Answer:
<em>A supersaturated solution that undergoes a physical shock can result in the crystallizing of the solute in the solution.</em>
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Explanation:
A solution is made up of a solute dissolved in a solvent. <em>A supersaturated solution is one in which the solvent holds more of the solute that it can hold in a normal condition</em>. Supersaturation is an unstable state than easily reverse itself. At supersaturation, the maximum ability of the solvent to dissolve and hold the solute is stretched to its maximum limit. Physical shock to such a system in any any form possible will result in the crystallization of the solute within the solution. <em>Physical shock can be in the form of a reduced temperature, a reduction in the volume of the solvent by evaporation, a decrease in the pressure of the system and even a mild vibration</em>.