The number of protons and electrons of an atom is equal
and the amount can be obtained by looking at the atomic number of that atom or
element.
The atomic numbers are:
Gold = 79
Thallium = 81
So we are looking for the element with an atomic number of
80, that is:
Mercury
Answer:
<span>Mercury (Hg)</span>
It's true that the substance is contain 75% carbon and 25% H
Answer:
The velocity of flow in 10in pipe is 4.16 ft/s.
Explanation:
Given that
Specific gravity = 0.8
Viscosity =0.00042
For pipe 1
For pipe 1
If we assume that flow in the both pipe is laminar
For laminar flow through circular pipe
So same pressure drop we can say that
So the velocity of flow in 10in pipe is 4.16 ft/s.
Answer:
If the amount of magnification is correct, then an individual germ can be seen, because individual germs exist but are too small for human eyes.
Explanation:
<em>Leeuwenhoek was the first scientists to experiment with microorganisms using a self-designed single-lens microscope. He described the tiny organisms as 'animacules'. He is known for his pioneer work in the design of the first microscope.</em>
The microscope works by magnifying objects placed on the stage. Germs are microbes that cannot be seen with ordinary eye unless they are magnified appropriately. They are virtually everywhere, including the parts of the world where humans cannot survive.
Hence, the only correct option which most likely inspired Leeuwenhoek's experimentation with technology is the first option. The remaining options are deficient in some ways.
Answer:
running water and glaciers
