Answer:
Hydrogen may be used in fuel cells for local electricity generation or potentially as a transportation fuel. Hydrogen is produced as a by-product of industrial chlorine production by electrolysis.
Answer:
The answer for this question would be B- An unbalanced force
Answer:
- <u>The container must be built of lead, and it should be kept in a concrete vault.</u>
Explanation:
The goal is to contain the <em>gamma rays</em> to<em> reduce</em> the <em>exposure </em>to their harmful <em>radiation</em>.
The gamma rays are the most energetic electromagnetic radiation: they have the smallest wavelength, the largest frequency, and the largest energy from all the electromagnetic radiations.
Due to that, only very dense substances like lead and concrete can stop the gamma rays. In the case of concrete, large blocks with thick walls are required.
Thus, in a lab the best container for a sample of uranium - 238 that is decaying, emitting gamma rays, must be built of lead, and enclosed in a conrete vault.
Answer: The bond between them is covalent bond.
Explanation: There are 2 types of bonds present:
1. Covalent bond: This bond is present when there is sharing of electrons between two elements. This bond is prominent in the bonding of two non-metals.
2. Ionic bond: This type of bond is formed when there is a complete transfer of electrons from one element to another element. In this bonding one element is always a metal and another is a non-metal.
We are given that a carbon atom is forming two bonds with hydrogen and rest two with carbon atoms. Carbon and hydrogen both are non-metals and hence, the bonds between them will be purely covalent in nature.
So, the bond between two carbon atoms is covalent bond.
