Please help me in question 4 and 5
1 answer:
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Answer:
25 valence electrons.
Explanation:
Hello!
In this case, based on the attached picture, you can see that the chlorate ion has three oxygen atoms and one chlorine ion, whereas you can see there is a coordination bond (two arrows) from chlorine to oxygen which means that oxygen receives two electrons from chlorine in order to complete its octet and to allow chlorine to not exceed the octet. It means there is another oxygen completes its octet via the Cl=O bond and the the last oxygen is negatively charged because it is missing one bond to attain its octet even thought chlorine actually completes its octet.
Therefore, this ion has seven valence electrons from chlorine and 18 valence electrons from the three oxygen atoms, which means it has 25 valence electrons overall.
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Answer:
The correct option is;
D.) The molecular masses of the gases, because the gas molecules have the same average kinetic energy and mass can be calculated using the equation,
Explanation:
The graph shows the proportion of the atoms of each gas have a given velocity
The given parameters of the graphs are;
The dependent variable of the graph = The number of molecules
The independent variable = The molecular speed (m/s)
The temperature of the gases = The same temperature
Therefore, from the above equation, at constant temperature, the root mean square velocity varies inversely as the molecular weight
Similarly from the kinetic energy equation, we have;
Whereby, the energy contained in each of the four gas are the same, we have;
For increasing molecular mass by a factor of 2, the velocity decreases by a factor of 4.