Answer:
11
Explanation:
Data obtained from the question include:
Mass number = 23
Neutron = 12
Atomic number =.?
Next, we shall determine the number of protons present in the element.
This can be achieved by doing the following:
Mass number = Proton + Neutron
Mass number = 23
Neutron = 12
Proton =...?
Mass number = Proton + Neutron
23 = Proton + 12
Collect like terms
Proton = 23 – 12
Proton = 11
The atomic number of an element is equal to the proton number.
Atomic number = proton number
Proton number = 11
Atomic number = proton = 11
Therefore, the atomic number is 11.
Q is the heat added to the system.
Hello There! ^_^
Your question: Why is green house is bad for the earth..?
Your answer: It's not a bad thing, but we people consider 'greenhouse' as a negative impact because the earth is heating up really quick. This is caused because we are constantly adding alot of greenhouse gases to our environment.
Hope this helps!
B) mid ocean ridge because a rise is a underwater mtn range located where tectonic plates are spreading apart
