Answer:
C. From the air in the stratosphere
Explanation:
I hope it will help
Answer:
It has 140 neutrons because Mass number= No of protons + no of neutrons
The traditional calcium atom has twenty protons and twenty electrons making it neutral.
The calcium in the pic is a calcium ion so the number of protons and electrons are not equivalent.
Since it's 2+ that means the ion is positively charged and for that to happen electrons are away.
So 20-2=18
There are 18 electrons
Answer:
Explanation:
the species that will be oxidized first will depend upon their oxidation potential .
oxidation potential are given as follows
F⁻ = - 2.87 V , Br⁻ = - 1.09 V , Cl⁻ = -1.36 V, Mg⁺² = -2.37 V, Cu⁺² = +.34 V
Higher the oxidation potential , higher the tendency to be oxidised .
so Cu⁺² is easiest to be oxidised . F⁻ is to be oxidised most difficult.
The order from easiest to most difficult as follows
Cu⁺² > Br⁻ > Cl⁻ > Mg⁺² > F⁻
The fossil fuels, CO2, greenhouse effect, and climate change are all things that are connected with each other and contribute for each successive one to occur. The fossil fuels are heavily used by the humans. Through their burning, the fossil fuels release lot of CO2 into the atmosphere. The CO2 is the most common greenhouse gas, thus it is a gas that manages to trap the heat into the atmosphere. So as the CO2 from the burning of the fossil fuels increases in the atmosphere, the greenhouse effect also increases. The greenhouse effect is the one that manages to keep the Earth warm, which is good, but it can also pass the limit and make the whole planet much warmer, resulting in rise of the sea levels because of the melting of the ice caps and glaciers. That will cause significant climate changes all over the globe because the sea currents will change, the atmosphere will keep more heat, and the water surface will increase.