From the above statement, John can infer that the rock underwent metamorphism and also is not altered by heat or pressure.
<u>Explanation</u>:
- Metamorphic rock is an igneous sedimentary rock and although when put through heat the rock becomes hot but does not alter its shape or melt. If the rock melts then it is only an igneous rock and not a sedimentary one.
- During metamorphism, the chemical and the mineral content of prolith are changed due to changes in the environment based on physical and chemical conditions.
- Even though the rocks remain solid, fluid is present between the macroscopic spaces.
- This gives "The Geologist" accurate information of what happens beneath the earth during the formation of mountains.
- Metamorphic rocks are like probes that go down the earth and comes back giving information of what happens underneath the surface.
In Alpha decay two neutrons and protons are lost, so the mass decreases by four and the atomic number decreases by two.
Therefore the correct answer is B: Ra-224.
Carbon dioxide gas means CO₂(g)
solid barium oxide means BaO(s)
solid barium carbonate means BaCO₃(s)
The reaction is:
CO₂(g) + BaO(s) --> BaCO₃(s)
We now need to balance it.
We have 1 carbon atom on the left side and 1 carbon atom on the right side
We have 3 oxygen atoms on the left side and 3 oxygen atoms on the right side
We have 1 barium atom on the left side and 1 barium atom on the right side
Therefore, the chemical equation for the reaction is balanced.
CO₂(g) + BaO(s) --> BaCO₃(s)
Radio waves, microwaves, infrared rays, optical rays, ultraviolet rays, X-rays, and gamma-rays.