<u>Answer</u>:
When Uranium-238 decays, it emits 8 Alpha particles and 6 beta particles before finally becoming the stable daughter product. The atomic number and mass number of the daughter product is 92 and 234 respectively.
<u>Explanation</u>:
In the process of decay of Uranium-238, it emits alpha particles, and the resultant product is Thorium-234, which turns into Protactinium-234, and this Protactinium-234 undergoes the beta decay to form the Uranium-234.
As per the question, a stable daughter product is created after the emission of alpha and beta particles, this implies that Uranium-234 is a stable product after the decay of Uranium-238. Therefore, the atomic number is 92 (number of protons) and the mass number is 234 (protons+neutrons) which is also the element of the naming.
Answer:
Mesolithic era
Explanation:
The Mesolithic era refers to the middle stage of the stone age i.e. between the Paleolithic and Neolithic. The Paleolithic refers to the old stone age and the Neolithic refers to the new stone age. During this time, the microlithic tools and other attacking weapons were made by the early humans, and also there occurred changes in their way of settlement as the climate and geography changed significantly.
The Mesolithic era started about 8000 years to 2700 years back in the past, in the northwestern part of Europe.
Thus, the Mesolithic era occurred when Europe occupied the present landscape, in terms of climate, biology, and geography.
Answer:
Not sure But I think it's Russia
Explanation:
Es un conjunto de acciones que contribuyen a la situación económica de una sociedad y el desarrollo de la misma. Se realizan actividades económicas o de comercio para ir generando dinero y así mismo impuestos
Answer: glaciers, rivers, lakes...........
