Determine the number of protons and neutrons in plutonium-239 and write its symbol in the form azx.
2 answers:
Explanation:
Atomic number of an atom means the sum of total number of protons present in an atom.
Mass number is the sum of total number of protons and neutrons present in an atom.
And, when we write the symbol of an atom then it is represented like this , where "a" represents the mass number of the atom and "z" represents the number of protons.
Therefore, in plutonium-239 it is shown that mass number is 239 and atomic number of a plutonium atom is 94. Now, calculate its number of neutrons as follows.
Mass number = no. of protons + no. of neutrons
239 = 94 + no. of neutrons
no. of neutrons = 239 - 94
= 145
Thus, we can conclude that in plutonium-239 number of protons is 94, number of neutrons is 145 and its symbol is .
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a)
b)
Sulphurdioxide
c)
d)
Incomplete combustion produce harmful gases.
Explanation:
a)
Carbon reacts with atmospheric oxygen to form carbondioxide as well as sulphur dioxide.
The chemical equations are as follows.
b)
Sulfur dioxide is very harmful to the environment to cause acid rains.
This harmful gas mix with rain water to form sulphuric acid.
c)
The balanced chemical equation for the reaction that produces harmful environmental effects is as follows.
d)
In the absence of proper amount of oxygen required for combustion, incomplete combustion will take place which will result in formation of more carbondioxide an other harmful gases.